202«The Horsehead nebula, a template source for interstellar physics and chemistry» Maryvonne Gerin (LERMA), Jérôme Pety (IRAM), Javier R. Goicoechea; arXiv:0905.3625; arxiv.org/abs/0905.3625 (2020-12-28)
238«A dwarf galaxy's transformation and a massive galaxy's edge: autopsy of kill and killer in NGC 1097» N. C. Amorisco, D. Martinez-Delgado, J. Schedler; arXiv:1504.03697; arxiv.org/abs/1504.03697 (2021-01-20)
263«Two distinct sequences of blue straggler stars in the globular cluster M30» F. R. Ferraro, G. Beccari, E. Dalessandro, B. Lanzoni, A. Sills, R. T. Rood, F. Fusi Pecci, A. I. Karakas, P. Miocchi, S. Bovinelli; Published on the 24th December 2009 issue of Nature; arXiv:1001.1096; DOI:10.1038/nature08607; arxiv.org/abs/1001.1096 (2021-02-08)
266«The Pleiades: the celestial herd of ancient timekeepers» Amelia Sparavigna; arXiv:0810.1592; arxiv.org/abs/0810.1592 (2021-02-12)
318«The electron temperatures of HII regions S 201, S 206 and S 209: multi-frequency GMRT observations.» Omar, A.; Chengalur, J. N.; Roshi, D. A.; Bulletin of the Astronomical Society of India, Vol. 30, p. 705-706 (2002); arXiv:astro-ph/0205061; DOI:10.48550/arXiv.astro-ph/0205061; Bibcode:2002BASI...30..705O
560«Sejong Open Cluster Survey. I. NGC 2353» Beomdu Lim (Sejong Univ), Hwankyung Sung (Sejong Univ), R. Karimov (UBAI), M. Ibrahimov (UBAI); Journal of The Korean Astronomical Society, vol. 44, issue 2, pp. 39-48, April 2011; arXiv:1103.4927; DOI:10.5303/JKAS.2011.44.2.39; Bibcode:2011JKAS...44...39L

astro sapiens

29«Im Fadenkreuz: NGC 7662, NGC 7209, Granatstern» von Markus Hägi; astro*sapiens 3/91, S.52; DOI:10.5169/seals-896895
30«Im Fadenkreuz: Omikron 2, NGC 1535» von Markus Hägi; astro*sapiens 4/91, S.7; DOI:10.5169/seals-896898
31«Die Fehler in Messiers Katalog» von Xavier Donath; astro*sapiens 4/91, S.39; DOI:10.5169/seals-896904
32«Die Galaxien des Virgo-Haufens» von Hans-Rudolf Frei; astro*sapiens 1/92, S.15; DOI:10.5169/seals-896911
33«Im Fadenkreuz: NGC 2683, NGC 2419, NGC 2371/2» von Markus Hägi; astro*sapiens 1/92, S.35; DOI:10.5169/seals-896913
34«Im Fadenkreuz: 30/31 Cygni, SAO 49338, NGC 6826, NGC 6811» von Markus Hägi; astro*sapiens 2/92, S.18; DOI:10.5169/seals-896921
35«Im Fadenkreuz: NGC 7027, Humason 1-2» von Markus Hägi; astro*sapiens 3/92, S.29; DOI:10.5169/seals-896931
36«Im Fadenkreuz: NGC 457, Messier 103» von Markus Hägi; astro*sapiens 4/92, S.26; DOI:10.5169/seals-896943
37«Im Fadenkreuz» von Markus Hägi; astro*sapiens 3/93, S.6; DOI:10.5169/seals-896853
38«Im Fadenkreuz: Die Lösung!» von Markus Hägi; astro*sapiens 4/93, S.51; DOI:10.5169/seals-896866
39«Im Fadenkreuz: NGC 2392, South 548» von Markus Hägi; astro*sapiens 1/94, S.25; DOI:10.5169/seals-896952
40«Auch M51 Hat Eine Supernova!» von Stefan Meister; astro*sapiens 2/94, S.6; DOI:10.5169/seals-896957
41«Im Fadenkreuz: M 51, ξ Ursae Maioris» von Markus Hägi; astro*sapiens 2/94, S.52; DOI:10.5169/seals-896968
42«Im Fadenkreuz: NGC 6934, NGC 6905» von Markus Hägi; astro*sapiens 3/94, S.48; DOI:10.5169/seals-896978
43«Im Fadenkreuz: Messier 77, NGC 1055» von Markus Hägi; astro*sapiens4/94, S.33; DOI:10.5169/seals-896987
44«Schleierhaftes Am Winterhimmel» von Bruno Bleiker und Patrick Schellenbauer; astro*sapiens 1/95, S.12; DOI:10.5169/seals-896786
45«Im Fadenkreuz: ζ Orionis, 52 Orionis, λ Orionis» von Markus Hägi; astro*sapiens 1/95, S.28; DOI:10.5169/seals-896790
46«Grün, Blau Oder Grau?» von Philipp Heck; astro*sapiens 2/95, S.29; DOI:10.5169/seals-896803
47«Im Fadenkreuz: NGC 5879, NGC 5866, NGC 5907, NGC 5908, NGC 5905» von Markus Hägi; astro*sapiens2/95, S.46; DOI:10.5169/seals-896806
48«Im Fadenkreuz: M 15, NGC 7008, NGC 7479» von Philipp Heck; astro*sapiens 3/95, S.27; DOI:10.5169/seals-896813
49«Im Fadenkreuz: M 1, NGC 1514, NGC 1931» von Markus Hägi; astro*sapiens 4/95, S.17; DOI:10.5169/seals-896823
50«Von Samichläusen und Weihnachtsbäumen: Zwei Schmankerl am Winterhimmel» von Philipp Heck; astro*sapiens 4/95, S. 51; DOI:10.5169/seals-896830

Astronomical Journal (AJ)

148«A Catalog of Parameters for Globular Clusters in the Milky Way» Harris, William E.; Astronomical Journal v.112, p.1487, October 1996 / Revision: December 2010; DOI:10.1086/118116; Bibcode:1996AJ....112.1487H; physwww.mcmaster.ca/~harris/mwgc.dat (2021-01-03)
201«Looking into the Horsehead» Marc W. Pound1, Bo Reipurth, and John Bally; DOI:10.1086/368138; iopscience.iop.org/article/10.1086/368138 (2020-12-28)
255«A study of reflection nebulae» van den Bergh, S.; Astronomical Journal, Vol. 71, p. 990-998 (1966); DOI:10.1086/109995; cdsarc.unistra.fr/viz-bin/cat/VII/21 (2021-01-30)
311«A KINEMATIC AND PHOTOMETRIC STUDY OF THE GALACTIC YOUNG STAR CLUSTER NGC 7380» W. P. Chen, A. K. Pandey, Saurabh Sharma, C. W. Chen, Li Chen, J. Sperauskas, K. Ogura, R. J. Chuang, and R. P. Boyle; Published 2011 August 9; DOI:10.1088/0004-6256/142/3/71; iopscience.iop.org/article/10.1088/0004-6256/142/3/71 (2021-04-13)
341«Optical identifications of AFCRL rocket infrared sources.» Cohen, M.; Astronomical Journal, Vol. 80, p. 125-127 (1975); February 1975; DOI:10.1086/111721; Bibcode:1975AJ.....80..125C; ui.adsabs.harvard.edu/abs/1975AJ.....80..125C/abstract (2021-05-12)
354«LkHα 101 and the Young Cluster in NGC 1579» G. H. Herbig, Sean M. Andrews, and S. E. Dahm; The Astronomical Journal, Volume 128, Number 3; DOI:10.1086/423043; iopscience.iop.org/article/10.1086/423043 (2021-05-21)
357«Spitzer Observations of IC 348: The Disk Population at 2-3 Million Years» Charles J. Lada, August A. Muench, K. L. Luhman, Lori Allen, Lee Hartmann, Tom Megeath, Philip Myers, Giovanni Fazio, Kenneth Wood, James Muzerolle; The Astronomical Journal, Volume 131, Number 3; DOI:10.1086/499808; iopscience.iop.org/article/10.1086/499808 (2021-05-21)
375«REINVESTIGATING THE CLUSTERS KOPOSOV 1 AND 2» Nathaniel Paust, Danielle Wilson, and Gerard van Belle; Published 2014 June 10; The Astronomical Journal, Volume 148, Number 1; DOI:10.1088/0004-6256/148/1/19
376«Physical Parameters of the Intermediate age Open Cluster IC 1311: Clues for the Theory of Stellar Evolution» Delgado, A. J.; Alfaro, E. J.; Aparicio, A.; Cabrera-Cano, J.; Astronomical Journal v.108, p.2193; December 1994; DOI:10.1086/117230
379«Survey for Transiting Extrasolar Planets in Stellar Systems. IV. Variables in the Field of NGC 1245» Joshua Pepper1 and Christopher J. Burke1; Published 2006 July 27; The Astronomical Journal, Volume 132, Number 3; DOI:10.1086/505942
380«Survey for Transiting Extrasolar Planets in Stellar Systems. I. Fundamental Parameters of the Open Cluster NGC 1245» Christopher J. Burke, B. Scott Gaudi, D. L. DePoy, Richard W. Pogge, and Marc H. Pinsonneault; The Astronomical Journal, Volume 127, Number 4, 2004;; DOI:10.1086/382720
385«Star Counts in the Open Cluster NGC 2420» Leonard, Peter J. T.; Astronomical Journal v.95, p.108, January 1988; DOI:10.1086/114617
389«Resolving the Circumstellar Environment of the Galactic B[e] Supergiant Star MWC 137 from Large to Small Scales» Michaela Kraus, Tiina Liimets, Cristina E. Cappa, Lydia S. Cidale, Dieter H. Nickeler, Nicolas U. Duronea, Maria L. Arias, Diah S. Gunawan, Mary E. Oksala, Marcelo Borges Fernandes, Grigoris Maravelias, Michel Curé, and Miguel Santander-García; Published 2017 October 20; The Astronomical Journal, Volume 154, Number 5; DOI:10.3847/1538-3881/aa8df6
394«LOW-METALLICITY YOUNG CLUSTERS IN THE OUTER GALAXY. I. Sh 2-207» Chikako Yasui, Naoto Kobayashi, Alan T. Tokunaga, Masao Saito, and Natsuko Izumi; Published 2016 February 9; The Astronomical Journal, Volume 151, Number 3; DOI:10.3847/0004-6256/151/3/50
407«Runaway Stars as Possible Sources of the Elliptical Ring Structures in NGC 7538» Josephine Fenske, Jason Arakawa, Cassandra Fallscheer, and James Di Francesco; The Astronomical Journal, Volume 161, Number 4, 2021; DOI:10.3847/1538-3881/abded2
424«Open Cluster IC 1369 and Its Vicinity: Multicolor Photometry and Gaia DR2 Astrometry» V. Straižys, R. P. Boyle, S. Raudeliūnas, J. Zdanavičius, R. Janusz, M. Macijauskas, R. Lazauskaitė, K. Černis, K. Zdanavičius, M. Maskoliūnas, V. Čepas, and A. Kazlauskas; The Astronomical Journal, Volume 159, Number 3, 2020; DOI:10.3847/1538-3881/ab67b5
445«The Sejong Open Cluster Survey (SOS). IV. The Young Open Clusters NGC 1624 and NGC 1931» Beomdu Lim, Hwankyung Sung, Michael S. Bessell, Jinyoung S. Kim, Hyeonoh Hur, and Byeong-Gon Park;The Astronomical Journal, Volume 149, Number 4, 215; DOI:10.1088/0004-6256/149/4/127
506«The Interacting Galaxies NGC 5394/5395: A Post-Ocular Galaxy and Its Ring/Spiral Companion» Michele Kaufman, Elias Brinks, Bruce G. Elmegreen, Debra Meloy Elmegreen, Mario Klarić, Curtis Struck, Magnus Thomasson, and Stuart Vogel; The Astronomical Journal, Volume 118, Number 4, 1999; DOI:10.1086/301030
518«Kinematic and Photometric Evidence for a Bar in NGC 2683» Rachel Kuzio de Naray, Matthew J. Zagursky, and Stacy S. McGaugh; The Astronomical Journal, Volume 138, Number 4, 2009; DOI:10.1088/0004-6256/138/4/1082
529«A Spatiokinematic Study of the Planetary Nebula NGC 4361: Evidence for Quadrupolar Flows» C. Muthu and B. G. Anandarao; The Astronomical Journal, Volume 121, Number 4, 2001; DOI:10.1086/319939
539«Physical Structure of Planetary Nebulae. III. The Large and Evolved NGC 1360» Goldman, Daniel B.; Guerrero, Martín A.; Chu, You-Hua; Gruendl, Robert A.; The Astronomical Journal, Volume 128, Issue 4, pp. 1711-1715, October 2004; arXiv:astro-ph/0407568; DOI:10.1086/424623; Bibcode:2004AJ....128.1711G
549«The Highly Enriched Planetary Nebula BV-1» Kaler, James B.; Chu, You-Hu; Jacoby, George H.; Astronomical Journal v.96, p.1407, October 1988; DOI:10.1086/114890; Bibcode:1988AJ.....96.1407K
582«H I Imaging Observations of Superthin Galaxies. II. IC 2233 and the Blue Compact Dwarf NGC 2537» Lynn D. Matthews and Juan M. Uson; The Astronomical Journal, Volume 135, Number 1, 2008; DOI:10.1088/0004-6256/135/1/291
598«Supernovae and Supernova Remnants» Poveda, A. ; Woltjer, L.; Astronomical Journal, Vol. 73, p. 65 (1968); DOI:10.1086/110600; Bibcode:1968AJ.....73...65P

Astronomische Nachrichten

554«Nebulae which are not recorded in the Catalogues» Roberts, I.; Astronomische Nachrichten, volume 147, p.87, August 1898; DOI:10.1002/asna.18981470406; Bibcode:1898AN....147...87R
568«Nébuleuses découvertes et observées à Marseille» Stephan, E.; Astronomische Nachrichten, volume 105, Issue 6, p.81, April 1883; DOI:10.1002/asna.18831050602; Bibcode:1883AN....105...81S
594«Untersuchungen über Reflexionsnebel am Palomar Sky Survey I. Verzeichnis von Reflexionsnebeln» Dorschner, J. ; Gürtler, J.; Astronomische Nachrichten, volume 287, p.257; December 1963; DOI:10.1002/asna.19632870507; Bibcode:1963AN....287..257D


51Eye On The Sky: Canes Venatici by Deborah Byrd; Astronomy 4/92, p.52
52Eye On The Sky: Sagittarius by Deborah Byrd; Astronomy 7/92, p.52
53Exploring The Wonders Of Scutum by Robert Garfinkle; Astronomy 7/92, p.67
54Eye On The Sky: Cygnus by Deborah Byrd; Astronomy 8/92, p.48
55Eye On The Sky: Delphinus, Equuleus by Deborah Byrd; Astronomy 10/92, p.48
56Eye On The Sky: Orion by Deborah Byrd; Astronomy 1/93, p.52
57Eye On The Sky: Cancer by Deborah Byrd; Astronomy 2/93, p.52
58Eye On The Sky: Bootes by Deborah Byrd; Astronomy 4/93, p.48
59Eye On The Sky: Libra by Deborah Byrd; Astronomy 5/93, p.48
60Beautiful Bootes by Alister Ling; Astronomy 5/93, p.56
61Eye On The Sky: Scorpius by Deborah Byrd; Astronomy 6/93, p.48
62Eye On The Sky: Aquila by Deborah Byrd; Astronomy 7/93, p.48
63Eye On The Sky: Aquarius by Deborah Byrd; Astronomy 8/93, p.56
64Eye On The Sky: Piscis Austrinus by Deborah Byrd; Astronomy 9/93, p.48
65The Starry Sky: Orion by Deborah Byrd; Astronomy 1/94, p.55
66The Starry Sky: Perseus by Deborah Byrd; Astronomy 2/94, p.52
67The Starry Sky: Leo by Deborah Byrd; Astronomy 3/94, p.51
68The Starry Sky: Ursa Maior by Deborah Byrd; Astronomy 5/94, p.82
69The Starry Sky: Lyra by Deborah Byrd; Astronomy 6/94, p.51
70Tracking Down A Quasar by Phil Harrington; Astronomy 6/94, p.56
71The Starry Sky: Cygnus by Deborah Byrd; Astronomy 7/94, p.52
72Hunting Down The Cygnus Bubble; Astronomy 7/94, p.53
73The Starry Sky: Aquila by Deborah Byrd; Astronomy 8/94, p.51
74The Starry Sky: Cassiopeia by Deborah Byrd; Astronomy 9/94, p.63
75Spot M33 With The Naked Eye; Astronomy 9/94, p.65
76The Starry Sky: Aries by Deborah Byrd; Astronomy 10/94, p.50
77The Starry Sky: Taurus by Deborah Byrd; Astronomy 12/94, p.60
78The Starry Sky: Canis Minor by Deborah Byrd; Astronomy 2/95, p.63
79The Starry Sky: Virgo by Deborah Byrd; Astronomy 4/95, p.62
80The Starry Sky: Sagittarius by Deborah Byrd; Astronomy 7/95, p.60
81The Starry Sky: Capricornus by Deborah Byrd; Astronomy 8/95, p.58
82The Starry Sky: Cepheus by Deborah Byrd; Astronomy 9/95, p.63
83The Starry Sky: Pisces by Deborah Byrd; Astronomy 10/95, p.62
84The Starry Sky: Andromeda by Deborah Byrd; Astronomy 11/95, p.69
85The Starry Sky: Auriga by Deborah Byrd; Astronomy 12/95, p.69
86The Starry Sky: Gemini by Deborah Byrd; Astronomy 1/96, p.64
87The Starry Sky: Canopus and Carina the Keel by Deborah Byrd; Astronomy 2/96, p.64
88The Starry Sky: Canes Venatici by Deborah Byrd; Astronomy 3/96, p.62
89The Starry Sky: Coma Berenices by Deborah Byrd; Astronomy 4/96, p.62
90Hunt Down A Quasar; Astronomy 4/96, p.64
91Plunge Into The Lagoon by David J. Eichner; Astronomy 7/96, p.82
92Have Astronomers Solved The Quasar Enigma? by Ken Croswell; Astronomy 2/93, p.28

Astronomy & Astrophysics

146«Version 2000 of the Catalogue of Galactic Planetary Nebulae» L. Kohoutek, A&A Volume 378, Number 3, November II 2001; DOI:10.1051/0004-6361:20011162; cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/378/843
159«Planetary Nebulae distances in Gaia DR2» S. Kimeswenger and D. Barría; A&A Volume 616, August 2018; DOI:10.1051/0004-6361/201833647; cdsarc.u-strasbg.fr/ftp/J/A+A/616/L2 (2021-01-02)
228«A revised catalogue of δ Sct stars» E. Rodríguez, M. J. López-González and P. López de Coca; Astron. Astrophys. Suppl. Ser. Volume 144, Number 3, June II 2000; DOI:10.1051/aas:2000221; aas.aanda.org/articles/aas/abs/2000/12/h2054/h2054.html (2021-01-17)
254«The IC2118 association: new T Tauri stars in high-latitude molecular clouds» M. Kun, T. Prusti, S. Nikoli'c, L. E. B. Johansson, N. A. Walton; arXiv:astro-ph/0402353; DOI:10.1051/0004-6361:20034510; arxiv.org/abs/astro-ph/0402353 (2021-01-30)
257«Astrophysical parameters of Galactic open clusters» N. V. Kharchenko, A. E. Piskunov, S. Röser, E. Schilbach and R.-D. Scholz; A&A Volume 438, Number 3, August II 2005; DOI:10.1051/0004-6361:20042523; cdsarc.unistra.fr/viz-bin/cat/J/A+A/438/1163 (2021-01-31)
282«A Census of Variability in Globular Cluster M68 (NGC 4590)» N. Kains, A. Arellano Ferro, R. Figuera Jaimes, D. M. Bramich, J. Skottfelt, U. G. Jørgensen, Y. Tsapras, R. A. Street, P. Browne, M. Dominik, K. Horne, M. Hundertmark, S. Ipatov, C. Snodgrass, I. A. Steele, K.A. Alsubai, V. Bozza, S. Calchi Novati, S. Ciceri, G. D'Ago, P. Galianni, S.-H. Gu, K. Harpsøe, T.C. Hinse, D. Juncher, H. Korhonen, L. Mancini, A. Popovas, M. Rabus, S. Rahvar, J. Southworth, J. Surdej, C. Vilela, X.-B. Wang, O. Wertz; arXiv:1502.07345v1; DOI:10.1051/0004-6361/201424600; arxiv.org/abs/1502.07345 (2021-02-22)
293«NGC 4254: a spiral galaxy entering the Virgo cluster»; B. Vollmer, W. Huchtmeier, W. van Driel; A&A Volume 439, Number 3, September I 2005; DOI:10.1051/0004-6361:20041350; aanda.org/articles/aa/abs/2005/33/aa1350-04/aa1350-04.html (2021-03-08)
298«On the origin of the O and B-type stars with high velocities II Runaway stars and pulsars ejected from the nearby young stellar groups» R. Hoogerwerf, J.H.J. de Bruijne, P.T. de Zeeuw; arXiv:astro-ph/0010057; DOI:10.1051/0004-6361:20000014; arxiv.org/abs/astro-ph/0010057 (2021-03-25)
302«The power of teaming up HST and Gaia: the first proper motion measurement of the distant cluster NGC 2419» D. Massari, L. Posti, A. Helmi, G. Fiorentino1 and E. Tolstoy; A&A Volume 598, February 2017; DOI:10.1051/0004-6361/201630174; aanda.org/articles/aa/full_html/2017/02/aa30174-16/aa30174-16.html (2021-04-07)
306«Supermassive black holes in the Sbc spiral galaxies NGC 3310, NGC 4303 and NGC 4258» G. Pastorini, A. Marconi1 A. Capetti, D. J. Axon, A. Alonso-Herrero, J. Atkinson, D. Batcheldor, C. M. Carollo, J. Collett, L. Dressel, M. A. Hughes, D. Macchetto, W. Maciejewski, W. Sparks and R. van der Marel; A&A Volume 469, Number 2, July II 2007; DOI:10.1051/0004-6361:20066784; aanda.org/articles/aa/abs/2007/26/aa6784-06/aa6784-06.html (2021-04-08)
307«Interstellar anatomy of the TeV gamma-ray peak in the IC443 supernova remnant» P. Dell’Ova1, A. Gusdorf, M. Gerin, D. Riquelme, R. Güsten, A. Noriega-Crespo, L. N. Tram, M. Houde, P. Guillard, A. Lehmann, P. Lesaffre, F. Louvet, A. Marcowith and M. Padovani; A&A Volume 644, December 2020; DOI:10.1051/0004-6361/202038339
319«Star formation in the outer Galaxy: coronal properties of NGC 1893» M. Caramazza, G. Micela, L. Prisinzano, S. Sciortino, F. Damiani, F. Favata, J. R. Stauffer, A. Vallenari and S. J. Wolk; A&A Volume 539, March 2012; DOI:10.1051/0004-6361/201117256; aanda.org/articles/aa/full_html/2012/03/aa17256-11/aa17256-11.html (2021-04-22)
349«NGC 7139 and its stellar neighbourhood» Weinberger, R.; Ziener, R.; Astronomy and Astrophysics, Vol. 191, p. 297-302 (1988); February 1988; Bibcode:1988A%26A...191..297W; ui.adsabs.harvard.edu/abs/1988A%26A...191..297W/abstract (2021-05-16)
359«Discovery of a jet-like structure with overionized plasma in the SNR IC 443» Emanuele Greco, Marco Miceli, Salvatore Orlando, Giovanni Peres, Eleonora Troja and Fabrizio Bocchino; A&A Volume 615, July 2018; DOI:10.1051/0004-6361/201832733
361«IRAM and Gaia views of multi-episodic star formation in IC 1396A — The origin and dynamics of the Class 0 protostar at the edge of an HII region» Aurora Sicilia-Aguilar, Nimesh Patel, Min Fang, Veronica Roccatagliata, Konstantin Getman and Paul Goldsmith; A&A Volume 622, February 2019; DOI:10.1051/0004-6361/201833207
366«Spectral variability of luminous early type stars. I. Peculiar supergiant HD199478» Markova, N.; Valchev, T.; Astronomy and Astrophysics, v.363, p.995-1004 (2000); Bibcode:2000A&A...363..995M; ui.adsabs.harvard.edu/abs/2000A%26A...363..995M (2021-05-28)
369«The globular cluster NGC 288» Alcaino, G.; Astronomy and Astrophysics, Suppl. Ser., Vol. 21, p. 15 (1975); Bibcode:1975A&AS...21...15A; ui.adsabs.harvard.edu/abs/1975A%26AS...21...15A/abstract
384«The Gaia-ESO survey: 3D NLTE abundances in the open cluster NGC 2420 suggest atomic diffusion and turbulent mixing are at the origin of chemical abundance variations» Ekaterina Semenova, Maria Bergemann, Morgan Dea, Aldo Serenelli, Camilla Juul Hansen, Andrew J. Gallagher, Amelia Bayo, Thomas Bensby, Angela Bragaglia, Giovanni Carraro, Lorenzo Morbidelli, Elena Pancino and Rodolfo Smiljanic; A&A Volume 643, November 2020; DOI:10.1051/0004-6361/202038833
392«Interaction of hot stars and of the interstellar medium. VIII. Low-dispersion spectra of galactic nebulae and planetary nebulae.» Chopinet, M. ; Lortet-Zuckermann, M. C.; Astronomy and Astrophysics, Suppl. Ser., Vol. 25, p. 179-191 (1976); Bibcode:1976A&AS...25..179C; ui.adsabs.harvard.edu/abs/1976A%26AS...25..179C (2021-06-13)
395«NGC 3628: Ejection activity associated with quasars» H. Arp, E. M. Burbidge, Y. Chu, E. Flesch, F. Patat and G. Rupprecht; A&AVolume 391, Number 3, September I 2002, Pages 833 - 840; DOI:10.1051/0004-6361:20020828
398«New infrared star clusters in the Northern and Equatorial Milky Way with 2MASS» E. Bica, C. M. Dutra, J. Soares and B. Barbuy; A&A Volume 404, Number 1, June II 2003; DOI:10.1051/0004-6361:20030486
399«New detections of 51-60 A+-methanol masers towards IRAS sources.» van der Walt, D. J. ; Gaylard, M. J. ; MacLeod, G. C.; Astronomy and Astrophysics Supplement, v.110, p.81; April 1995; Bibcode:1995&AS..110...81V; ui.adsabs.harvard.edu/abs/1995A%26AS..110...81V (2021-06-26)
411«Properties of central stars of planetary nebulae with distances in Gaia DR2» I. González-Santamaría, M. Manteiga, A. Manchado, A. Ulla and C. Dafonte; A&A Volume 630, October 2019; DOI:10.1051/0004-6361/201936162
417«Internal motions in planetary nebulae : NGC 7354, I 289 and HU 1-2» Sabbadin, F.; Bianchini, A.; Hamzaoglu, E.; Astronomy and Astrophysics, Suppl. Ser., Vol. 51, p. 119-126 (1983); Bibcode:1983A&AS...51..119S; ui.adsabs.harvard.edu/abs/1983A%26AS...51..119S/abstract (2021-08-02)
422«Searching for intergalactic star forming regions in Stephan’s Quintet with SITELLE» S. Duarte Puertas, J. Iglesias-Páramo, J. M. Vilchez, L. Drissen, C. Kehrig and T. Martin; A&A Volume 629, September 2019; DOI:10.1051/0004-6361/201935686
430«Neutral hydrogen observations of the interacting galaxies NGC 4725 and NGC 4747» Wevers, B. M. H. R.; Appleton, P. N.; Davies, R. D. ; Hart, L.; Astronomy and Astrophysics, Vol. 140, p. 125-140 (1984); Bibcode:1984A&A...140..125W; ui.adsabs.harvard.edu/abs/1984A%26A...140..125W/abstract (2021-09-19)
437«Misclassified planetary nebulae» Acker, A.; Chopinet, M.; Pottasch, S. R.; Stenholm, B.; Astronomy and Astrophysics, Suppl. Ser., Vol. 71, p. 163-175 (1987); Bibcode:1987A%26AS...71..163A; ui.adsabs.harvard.edu/abs/1987A%26AS...71..163A (2021-09-27)
472«Photographic Nebulosities and Star Clusters Connected with the Milky Way» E. E. Barnard, Astronomy and Astro-Physics, Vol. XIII, No. 3, March 1894, pages 177-183; books.google.ch/books?id=AQHD6xPQYe4C&pg=PA177 (2022-01-19)
478«A spatio-kinematic model for the multiple shell planetary nebula NGC 1535» Banerjee, D. P. K.; Anandarao, B. G.; Astronomy and Astrophysics, Vol. 250, p. 165, October 1991; Bibcode:1991A&A...250..165B
495«The evolution of M 2–9 from 2000 to 2010» R. L. M. Corradi, B. Balick and M. Santander-García; A&A Volume 529, May 2011; DOI:10.1051/0004-6361/201016361
503«Morphology and expansion characteristics of the planetary nebula M 1-79» Saurer, W.; Astronomy and Astrophysics, v.326, p.1187-1194, October 1997; Bibcode:1997A&A...326.1187S
510«Gas physical conditions and kinematics of the giant outflow Ou4» Romano L. M. Corradi, Nicolas Grosso, Agnès Acker, Robert Greimel and Patrick Guillout; A&A Volume 570, October 2014; DOI:10.1051/0004-6361/201322718
513«The Cygnus X region. V. catalogue and distances of optically visible H II regions.» Dickel, H. R. ; Wendker, H. ; Bieritz, J. H.; Astronomy and Astrophysics, Vol. 1, p. 270-280 (1969); Bibcode:1969A&A.....1..270D
514«The peculiar nebula Simeis 57 - I. Ionized gas and dust extinction» F. P. Israel, M. Kloppenburg, P. E. Dewdney and J. Bally; A&A Volume 398, Number 3, February II 2003, pages 1063-1071; DOI:10.1051/0004-6361:20021685
515«The peculiar nebula Simeis 57 - II. Distance, nature and excitation» L. H. T. Oudshoorn, F. P. Israel, J. Brinchmann, M. B. C. Kloppenburg, A. G. A. Brown, J. Bally, T. R. Gull and P. T. Boyd; A&A Volume 650, June 2021; DOI:10.1051/0004-6361/202039372
527«The chemical composition of a regular halo globular cluster: NGC 5897» Andreas Koch and Andrew McWilliam; A&A Volume 565, May 2014; DOI:10.1051/0004-6361/201323119
538«A New Radio Molecular Line Survey of Planetary Nebulae: HNC/HCN as a Diagnostic of Ultraviolet Irradiation» Jesse Bublitz, Joel H. Kastner, Miguel Santander-García, Valentin Bujarrabal, Javier Alcolea, Rodolfo Montez Jr; A&A 625, A101 (2019); arXiv:arXiv:1904.08440; DOI:10.1051/0004-6361/201834408
550«A disrupted molecular ring in planetary nebula G119.3+00.3 (BV 5-1)» E. Josselin and R. Bachiller; A&A Volume 376, Number 2, September II 2001; DOI:10.1051/0004-6361:20010922
572«NGC 5385, NGC 2664 and Collinder 21: Three candidate open cluster remnants» S. Villanova, G. Carraro1, R. de la Fuente Marcos and R. Stagni; A&A Volume 428, Number 1, December II 2004; DOI:10.1051/0004-6361:20041121
577«Interstellar polarization and extinction towards the young open cluster NGC 1502» G. A. Topasna, N. T. Kaltcheva and E. Paunzen; A&A, Volume 615, July 2018; DOI:10.1051/0004-6361/201731903

Astronomy Letters

426«Stellar content of the interacting galaxies IC 1727 and NGC 672» Tikhonov, N. A.; Galazutdinova, O. A.; Lebedev, V. S.; Astronomy Letters, Volume 40, Issue 1, pp.11-21, January 2014; DOI:10.1134/S106377371401006X
523«Vertical motions in the gaseous disk of the spiral galaxy NGC 3631» Fridman, A. M.; Koruzhii, O. V.; Zasov, A. V.; Sil'chenko, O. K.; Moiseev, A. V.; Burlak, A. N.; Afanas'ev, V. L.; Dodonov, S. N.; Knapen, J.; Astronomy Letters, Volume 24, Issue 6, November 1998, pp.764-773; Pis'ma v Astronomicheskii Zhurnal, Vol. 24, p. 883; Bibcode:1998AstL...24..764F

Astrophysical Journal (ApJ)

140«Systematic properties of compact groups of galaxies» Hickson, P.; Astrophysical Journal, Vol. 255, p. 382-391 (1982); DOI:10.1086/159838; Bibcode:1982ApJ...255..382H
152«Extended Structures of Planetary Nebulae Detected in H2 Emission»; Xuan Fang, Yong Zhang, Sun Kwok, Chih-Hao Hsia, Wayne Chau, Gerardo Ramos-Larios, Martin A. Guerrero; The Astrophysical Journal, Volume 859, Number 2, 2018; arXiv:1804.08840; DOI:10.3847/1538-4357/aac01e; iopscience.iop.org/article/10.3847/1538-4357/aac01e (2021-01-02)
153«The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale» Letizia Stanghellini, Richard A. Shaw, and Eva Villaver; The Astrophysical Journal, Volume 689, Number 1, 2008; DOI:10.1086/592395; cdsarc.u-strasbg.fr/viz-bin/nph-Cat/html?J/ApJ/689/194/table1.dat (2021-01-02)
167«The most luminous quasar: S5 0014 +81» Kuhr, H.; Liebert, J. W.; Strittmatter, P. A.; Schmidt, G. D.; Mackay, C.; Astrophysical Journal, Vol. 275, p. L33-L37 (1983); 1983ApJ...275L..33K; DOI:10.1086/184166; Bibcode:1983ApJ...275L..33K; ui.adsabs.harvard.edu/abs/1983ApJ...275L..33K/abstract (2020-12-31)
199«Atlas Of Peculiar Galaxies», Halton Arp, 1966; Astrophysical Journal Supplement, vol. 14, p.1 (1966); DOI:10.1086/190147; Bibcode:1966ApJS...14....1A; ned.ipac.caltech.edu/level5/Arp/frames.html
237«A Measurement of the Black-Hole Mass in NGC 1097 using ALMA» Kyoko Onishi (1, 2), Satoru Iguchi, Kartik Sheth, Kotaro Kohno ((1) SOKENDAI (The Graduate University for Advanced Studies), (2) National Astronomical Observatory of Japan); DOI:10.1088/0004-637X/806/1/39; iopscience.iop.org/article/10.1088/0004-637X/806/1/39 (2021-01-20)
239«On the dark markings of the sky, with a catalogue of 182 such objects» Barnard, E. E.; Astrophysical Journal, 49, 1-24 (1919); DOI:10.1086/142439; Bibcode:1919ApJ....49....1B; ui.adsabs.harvard.edu/abs/1919ApJ....49....1B/abstract (2021-01-22)
251«Young Radio Pulsars in Galactic Globular Clusters» Jason Boyles, Duncan R. Lorimer, Phil J. Turk, Robert Mnatsakanov, Ryan S. Lynch, Scott M. Ransom, Paulo C. Freire, Khris Belczynski; The Astrophysical Journal, Volume 742, Number 1; DOI:10.1088/0004-637X/742/1/51; iopscience.iop.org/article/10.1088/0004-637X/742/1/51 (2021-01-24)
270«Catalogue of Bright Nebulae» Lynds, Beverly T.; Astrophysical Journal Supplement, vol. 12, p.163 (1965); DOI:10.1086/190123
278«The ACS Survey of Galactic Globular Clusters: M54 and Young Populations in the Sagittarius Dwarf Spheroidal Galaxy» Michael H. Siegel, Aaron Dotter, Steven R. Majewski, Ata Sarajedini, Brian Chaboyer, David L. Nidever, Jay Anderson, Antonio Marín-Franch, Alfred Rosenberg, Luigi R. Bedin, Antonio Aparicio, Ivan King, Giampaolo Piotto, I. Neill Reid;; DOI:10.1086/522003; iopscience.iop.org/article/10.1086/522003 (2021-02-18)
289«On the Identification of Radio Sources.» Baade, W.; Minkowski, R.; Astrophysical Journal, vol. 119, p.215; January 1954; DOI:10.1086/145813; Bibcode:1954ApJ...119..215B; ui.adsabs.harvard.edu/abs/1954ApJ...119..215B/abstract (2021-03-01)
305«Tidal Debris in the Starburst Galaxy NGC 3310: A New Tidal Loop?» Elizabeth H. Wehner and John S. Gallagher III 2004 ApJ 618 L21; DOI:10.1086/427651; iopscience.iop.org/article/10.1086/427651 (2021-04-08)
309«A Catalogue of Emission Nebulae Near the Galactic Plane» Sharpless, Stewart; Astrophysical Journal, vol. 118, p.362, November 1953; DOI:10.1086/145765; Bibcode:1953ApJ...118..362S
310«A Catalogue of H II Regions» Stewart Sharpless, US Naval Observatory, 1959; DOI:10.1086/190049; Bibcode:1959ApJS....4..257S; ui.adsabs.harvard.edu/abs/1959ApJS....4..257S/abstract (2021-04-11)
324«Globular clusters in the outer Galactic halo: new HST/ACS imaging of 6 globular clusters and the Galactic globular cluster age-metallicity relation» Aaron Dotter (STScI), Ata Sarajedini (UF), Jay Anderson (STScI); arXiv:1106.4307; DOI:10.1088/0004-637X/738/1/74; arxiv.org/abs/1106.4307 (2021-05-02)
326«HIDDEN MOLECULES IN PLANETARY NEBULAE: NEW DETECTIONS OF HCN AND HCO+ FROM A MULTI-OBJECT SURVEY» D. R. Schmidt and L. M. Ziurys; The Astrophysical Journal, Volume 817, Number 2; DOI:10.3847/0004-637X/817/2/175; iopscience.iop.org/article/10.3847/0004-637X/817/2/175 (2021-05-04)
327«The Population of Galactic Planetary Nebulae: a Study of Distance Scales and Central Stars Based on the Second Gaia Release» Letizia Stanghellini, Beatrice Bucciarelli, Mario G. Lattanzi, and Roberto Morbidelli; The Astrophysical Journal, Volume 889, Number 1; DOI:10.3847/1538-4357/ab59e4; iopscience.iop.org/article/10.3847/1538-4357/ab59e4 (2021-05-04)
329«Discovery of the First Quadruple Gravitationally Lensed Quasar Candidate with Pan-STARRS» C. T. Berghea, George J. Nelson, C. E. Rusu, C. R. Keeton, and R. P. Dudik; The Astrophysical Journal, Volume 844, Number 2; DOI:10.3847/1538-4357/aa7aa6; iopscience.iop.org/article/10.3847/1538-4357/aa7aa6/meta (2021-05-08)
330«Andromeda's Parachute: A Bright Quadruply Lensed Quasar at z=2.377» Kate H. R. Rubin, John M. O'Meara, Kathy L. Cooksey, Mateusz Matuszewski, Luca Rizzi, Gregory W. Doppmann, Shui Hung Kwok, D. Christopher Martin, Anna M. Moore, Patrick Morrissey, James D. Neill; DOI:10.3847/1538-4357/aaaeb7; iopscience.iop.org/article/10.3847/1538-4357/aaaeb7 (2021-05-08)
332«Properties of Some Old Planetary Nebulae» Abell, G. O.; Astrophysical Journal, vol. 144, p.259, April 1966; DOI:10.1086/148602; Bibcode:1966ApJ...144..259A; ui.adsabs.harvard.edu/abs/1966ApJ...144..259A/abstract (2021-05-10)
333«The Planetary Nebula A39: An Observational Benchmark for Numerical Modeling of Photoionized Plasmas» George. H. Jacoby, Gary. J. Ferland, and Kirk T. Korista; The Astrophysical Journal, Volume 560, Number 1; DOI:10.1086/322489; iopscience.iop.org/article/10.1086/322489 (2021-05-10)
335«The Discovery of Tidal Tails around the Globular Cluster NGC 5466» Belokurov, V.; Evans, N. W.; Irwin, M. J.; Hewett, P. C.; Wilkinson, M. I.; The Astrophysical Journal, Volume 637, Issue 1, pp. L29-L32. January 2006; DOI:10.1086/500362; Bibcode:2006ApJ...637L..29B; ui.adsabs.harvard.edu/abs/2006ApJ...637L..29B/abstract (2021-05-19)
337«Optical Spectrum of the Compact Planetary Nebula IC 5117» Siek Hyung, Lawrence H. Aller, Walter A. Feibelman, and Seong-Jae Lee; The Astrophysical Journal, Volume 563, Number 2; DOI:10.1086/323962; iopscience.iop.org/article/10.1086/323962 (2021-05-11)
338«Kinematical Analysis of a Sample of Bipolar Planetary Nebulae» Martina Dobrinčić, Eva Villaver, Martín A. Guerrero, and Arturo Manchado; Published 2008 May 13; The Astronomical Journal, Volume 135, Number 6; DOI:10.1088/0004-6256/135/6/2199; iopscience.iop.org/article/10.1088/0004-6256/135/6/2199
340«Studies of the infrared source CRL 2688» Ney, E. P.; Merrill, K. M.; Becklin, E. E.; Neugebauer, G.; Wynn-Williams, C. G.; Astrophysical Journal, Vol. 198, p. L129-L134 (1975); June 1975; DOI:10.1086/181829; Bibcode:1975ApJ...198L.129N; ui.adsabs.harvard.edu/abs/1975ApJ...198L.129N/abstract (2021-05-12)
344«A DETAILED SPATIOKINEMATIC MODEL OF THE CONICAL OUTFLOW OF THE MULTIPOLAR PLANETARY NEBULA NGC 7026» D. M. Clark, J. A. López, W. Steffen, and M. G. Richer; Published 2013 January 22; The Astronomical Journal, Volume 145, Number 3; DOI:10.1088/0004-6256/145/3/57; iopscience.iop.org/article/10.1088/0004-6256/145/3/57 (2021-05-14)
345«XMM-Newton Observations of the Bipolar Planetary Nebulae NGC 2346 and NGC 7026» Robert A. Gruendl, Martín A. Guerrero, You-Hua Chu, and Rosa M. Williams; The Astrophysical Journal, Volume 653, Number 1, 2006; DOI:10.1086/507940; iopscience.iop.org/article/10.1086/507940 (2021-05-14)
355«THE CALIFORNIA MOLECULAR CLOUD» Charles J. Lada, Marco Lombardi, and João F. Alves; Published 2009 August 25 • © 2009. The American Astronomical Society; The Astrophysical Journal, Volume 703, Number 1; DOI:10.1088/0004-637X/703/1/52; iopscience.iop.org/article/10.1088/0004-637X/703/1/52 (2021-05-21)
356«A Census of the Young Cluster IC 348» K. L. Luhman, John R. Stauffer, A. A. Muench, G. H. Rieke, E. A. Lada, J. Bouvier, and C. J. Lada; The Astrophysical Journal, Volume 593, Number 2; DOI:10.1086/376594; iopscience.iop.org/article/10.1086/376594 (2021-05-21)
360«Near-infrared Variability of Low-mass Stars in IC 1396A and Tr 37» Huan Y. A. Meng, G. H. Rieke, Jinyoung Serena Kim, Aurora Sicilia-Aguilar, N. J. G. Cross, Taran Esplin, L. M. Rebull, and Klaus W. Hodapp; Published 2019 June 6; The Astrophysical Journal, Volume 878, Number 1; DOI:10.3847/1538-4357/ab1b14
365«KINEMATIC DISTANCES OF GALACTIC PLANETARY NEBULAE» A. Y. Yang, W. W. Tian, H. Zhu, D. A. Leahy, and D. Wu; Published 2016 March 23; The Astrophysical Journal Supplement Series, Volume 223, Number 1; DOI:10.3847/0067-0049/223/1/6
367«The Cluster-forming Site AFGL 5157: Colliding Filamentary Clouds and Star Formation» L. K. Dewangan; Published 2019 October 14; The Astrophysical Journal, Volume 884, Number 1; DOI:10.3847/1538-4357/ab4189
374«The Discovery of Two Extremely Low Luminosity Milky Way Globular Clusters» S. Koposov, J. T. A. de Jong, V. Belokurov, H.-W. Rix, D. B. Zucker, N. W. Evans, G. Gilmore, M. J. Irwin, and E. F. Bell; The Astrophysical Journal, Volume 669, Number 1; arXiv:0706.0019; DOI:10.1086/521422
387«The Young Open Clusters King 12, NGC 7788, and NGC 7790: Pre-Main Sequence Stars and Extended Stellar Halos» T. J. Davidge; Published 2012 December 4; The Astrophysical Journal, Volume 761, Number 2; arXiv:1211.6398; DOI:10.1088/0004-637X/761/2/155
388«Catalogue and Bibliography of Stars of Classes B and A whose Spectra have Bright Hydrogen Lines» Merrill, Paul W.; Burwell, Cora G.; Astrophysical Journal, vol. 78, p.87, September 1933; DOI:10.1086/143490
403«Radio Emission from a Number of Possible Supernovae Remnants» Hogg, D. E.; Astrophysical Journal, vol. 144, p.819, 1966; Bibcode:1966ApJ...144..819H; ui.adsabs.harvard.edu/abs/1966ApJ...144..819H (2021-07-04)
410«Gas Accretion within the Dust Cavity in AB Aur» Pablo Rivière-Marichalar, Asunción Fuente, Clément Baruteau, Roberto Neri, Sandra P. Treviño-Morales, Andrés Carmona, Marcelino Agúndez, and Rafael Bachiller; The Astrophysical Journal Letters, Volume 879, Number 1, 2019; DOI:10.3847/2041-8213/ab289d
419«The IUE Spectra of Three Optically Narrow-Line O VI Planetary Nebulae: NGC 1501, IC 1747, and IC 1297» Walter A. Feibelman; The Astrophysical Journal Supplement Series, Volume 119, Number 2, 1998; DOI:10.1086/313160
425«Catalogue of CO radial velocities toward galactic HII regions» Blitz, L. ; Fich, M. ; Stark, A. A.; Astrophysical Journal, Suppl. Ser., Vol. 49, p. 183-206 (1982); DOI:10.1086/190795
428«Evidence of a Supermassive Black Hole in the Galaxy NGC 1023 from the Nuclear Stellar Dynamics» G. A. Bower, R. F. Green, R. Bender, K. Gebhardt, T. R. Lauer, J. Magorrian, D. O. Richstone, A. Danks, T. Gull, J. Hutchings, C. Joseph, M. E. Kaiser, D. Weistrop, B. Woodgate, C. Nelson, and E. M. Malumuth; The Astrophysical Journal, Volume 550, Number 1; DOI:10.1086/319730
433«Tidal effects as criteria for membership in small groups of galaxies: application to VV 166.» Kormendy, J.; Sargent, W. L. W.; Astrophysical Journal, Vol. 193, p. 19-25 (1974); DOI:10.1086/153122
434«Galaxy collisions in dense groups.» Hickson, P.; Richstone, D. O.; Turner, E. L.; Astrophysical Journal, Vol. 213, p. 323-326 (1977); DOI:10.1086/155158
439«The Interacting System NGC 7753--7752 (Arp 86). II. N-Body Modeling» Salo, Heikki ; Laurikainen, Eija; Astrophysical Journal v.410, p.586, June 1993; DOI:10.1086/172777
442«The Ghost of a Dwarf Galaxy: Fossils of the Hierarchical Formation of the Nearby Spiral Galaxy NGC 5907» David Martínez-Delgado, Jorge Peñarrubia, R. Jay Gabany, Ignacio Trujillo, Steven R. Majewski, and M. Pohlen; The Astrophysical Journal, Volume 689, Number 1, 2008; DOI:10.1086/592555
443«Photographs of nebulae with the 60-inch reflector, 1917-1919» Pease, F. G; Astrophysical Journal, 51, 276-308 (1920); DOI:10.1086/142552
444«The Next Generation Virgo Cluster Survey. IV. NGC 4216: A Bombarded Spiral in the Virgo Cluster» Sanjaya Paudel, Pierre-Alain Duc, Patrick Côté, Jean-Charles Cuillandre, Laura Ferrarese, Etienne Ferriere, Stephen D. J. Gwyn, J. Christopher Mihos, Bernd Vollmer, Michael L. Balogh, Ray G. Carlberg, Samuel Boissier, Alessandro Boselli, Patrick R. Durrell, Eric Emsellem, Lauren A. MacArthur, Simona Mei1, Leo Michel-Dansac, and Wim van Driel; The Astrophysical Journal, Volume 767, Number 2, 2013; DOI:10.1088/0004-637X/767/2/133
449«Multiwavelength Observations of the Peculiar Planetary Nebula IC 2149» R. Vázquez, L. F. Miranda, J. M. Torrelles, L. Olguín, G. Benítez, L. F. Rodríguez, and J. A. López; The Astrophysical Journal, Volume 576, Number 2, 2002; DOI:10.1086/341792
462«APM 08279+5255: An Ultraluminous Broad Absorption Line Quasar at a Redshift z = 3.87» Michael J. Irwin, Rodrigo A. Ibata, Geraint F. Lewis, and Edward J. Totten; The Astrophysical Journal, Volume 505, Number 2, 1998; DOI:10.1086/306213
468«Constraining the Active Galactic Nucleus and Starburst Properties of the IR-luminous Quasar Host Galaxy APM08279+5255 at Redshift 4 with SOFIA» T. K. Daisy Leung, Christopher C. Hayward, Caitlin M. Casey, Johannes Staguhn, Attila Kovacs6, and C. Darren Dowell; The Astrophysical Journal, Volume 876, Number 1, 219; DOI:10.3847/1538-4357/ab11ce
471«A Catalog of Markarian Galaxies» Mazzarella, Joseph M.; Balzano, Vicki A.; Astrophysical Journal Supplement v.62, p.751, December 1986; DOI:10.1086/191155; Bibcode:1986ApJS...62..751M
473«Catalogue of Dark Nebulae» Lynds, Beverly T.; Astrophysical Journal Supplement, vol. 7, p.1 (1962); DOI:10.1086/190072; Bibcode:1962ApJS....7....1L
474«Star-forming Sites IC 446 and IC 447: An Outcome of End-dominated Collapse of Monoceros R1 Filament» N. K. Bhadari, L. K. Dewangan, L. E. Pirogov, and D. K. Ojha; The Astrophysical Journal, Volume 899, Number 2, 2020; DOI:10.3847/1538-4357/aba2c6
480«Shaping the Glowing Eye Planetary Nebula, NGC 6751» D. M. Clark, Ma. T. García-Díaz, J. A. López, W. G. Steffen, and M. G. Richer; The Astrophysical Journal, Volume 722, Number 2, 2010; DOI:10.1088/0004-637X/722/2/1260
490«A Peculiar Galaxy that may be at a Young Evolutionary Stage» Burbidge, E. Margaret ; Burbidge, G. R. ; Shelton, J. W.; Astrophysical Journal, vol. 150, p.783, December 1967; DOI:10.1086/149381; Bibcode:2004bdmh.confE..70M
494«Models of the Mass-ejection Histories of Pre-planetary Nebulae. II. The Formation of Minkowski's Butterfly and its Proboscis in M2–9» Bruce Balick, Adam Frank, Baowei Liu, and Romano Corradi; The Astrophysical Journal, Volume 853, Number 2, 2018; DOI:10.3847/1538-4357/aaa772
497«The Structure and Dynamics of the Proto-Planetary Nebula M1-92» V. Bujarrabal, J. Alcolea, and R. Neri; The Astrophysical Journal, Volume 504, Number 2, 1998; DOI:10.1086/306129
519«Tidal Tails of Minor Mergers. II. Comparing Star Formation in the Tidal Tails of NGC 2782» Karen A. Knierman, Paul Scowen, Todd Veach, Christopher Groppi, Brendan Mullan, Iraklis Konstantopoulos, Patricia M. Knezek, and Jane Charlton; The Astrophysical Journal, Volume 774, Number 2, 2013; DOI:10.1088/0004-637X/774/2/125
562«Catalogs of Compact Groups of Galaxies from the Enhanced SDSS DR12» Jubee Sohn, Margaret J. Geller, Ho Seong Hwang, H. Jabran Zahid, and Myung Gyoon Lee; The Astrophysical Journal Supplement Series, Volume 225, Number 2, 2016; DOI:10.3847/0067-0049/225/2/23
564«The color of the nebulous stars» Seares, F. H. ; Hubble, E. P.; Astrophysical Journal, 52, 8-22 (1920); DOI:10.1086/142555; Bibcode:1920ApJ....52....8S
573«3D Morphology of Open Clusters in the Solar Neighborhood with Gaia EDR 3. II. Hierarchical Star Formation Revealed by Spatial and Kinematic Substructures» Xiaoying Pang, Shih-Yun Tang, Yuqian Li, Zeqiu Yu, Long Wang, Jiayu Li, Yezhang Li, Yifan Wang, Yanshu Wang, Teng Zhang, Mario Pasquato, and M. B. N. Kouwenhoven; The Astrophysical Journal, Volume 931, Number 2, 2022; DOI:10.3847/1538-4357/ac674e
580«The Young Cluster NGC 2362» S. E. Dahm; The Astronomical Journal, Volume 130, Number 4, 2005; DOI:10.1086/433178
592«Magnetic Field Uniformity Across the GF 9-2 YSO, L1082C Dense Core, and GF 9 Filamentary Dark Cloud» Dan P. Clemens, A. M. El-Batal, C. Cerny, S. Kressy, G. Schroeder, and T. Pillai; The Astrophysical Journal, Volume 867, Number 1, 2018; DOI:10.3847/1538-4357/aae2af
599«The Tail of PSR J0002+6216 and the Supernova Remnant CTB 1» F. K. Schinzel, M. Kerr, U. Rau1, S. Bhatnagar, and D. A. Frail; The Astrophysical Journal Letters, Volume 876, Number 1, 2019; DOI:10.3847/2041-8213/ab18f7
601«Photographs of nebulae with the 60-inch reflector 1911-1916.» Pease, F. G.; Astrophysical Journal, 46, 24-55, July 1917; DOI:10.1086/142341; Bibcode:1917ApJ....46...24P

Astrophysics Data System (ADS)

166Atlas of Compact Groups of Galaxies (Special Issue); Hickson, P.; Astrophysical Letters and Communications, Vol. 29, p. 1, 1993; Bibcode:1993ApL&C..29....1H; articles.adsabs.harvard.edu//full/1993ApL%26C..29....1H/0000001.000.html (2020-12-29)
219«Photometry of open cluster NGC 1931»; Pandey, A. K.; Mahra, H. S.; Astrophysics and Space Science, Volume 120, Issue 1, pp.107-113; Pub Date: March 1986;; DOI:10.1007/BF00653902; Bibcode:1986Ap&SS.120..107P; ui.adsabs.harvard.edu/abs/1986Ap%26SS.120..107P/abstract (2021-01-07)
288«Galactic Radiation at Radio Frequencies. II. The Discrete Sources» Stanley, G. J. & Slee, O. B.; Australian Journal of Scientific Research A Physical Sciences, vol. 3, p. 234; 1950AuSRA...3..234S; DOI:10.1071/PH500234; Bibcode:1950AuSRA...3..234S; adsabs.harvard.edu/full/1950AuSRA...3..234S (2021-03-01)
336«NGC 1333: A Nearby Burst of Star Formation» Josh Walawender, J. Bally, J. D. Francesco, J. Jørgensen; Handbook of Star Forming Regions, Volume I: The Northern Sky ASP Monograph Publications, Vol. 4. Edited by Bo Reipurth, p.346, December 2008; Bibcode:2008hsf1.book..346W; researchgate.net/publication/237811956_NGC_1333_A_Nearby_Burst_of_Star_Formation (2021-05-20)
342«Catalogue of selected compact galaxies and of post-eruptive galaxies» Zwicky, Fritz; Zwicky, Margrit A.; Guemligen, 1971; Bibcode:1971cscg.book.....Z
382«Photometric Study of Open Clusters NGC 2266 and NGC 7762» Maciejewski, G. ; Boeva, S. ; Georgiev, Ts. search by orcid ; Mihov, B. ; Ovcharov, E. ; Valcheva, A. ; Niedzielski, A.; Baltic Astronomy, Vol. 17, p. 51-65, 2008; Bibcode:2008BaltA..17...51M; ui.adsabs.harvard.edu/abs/2008BaltA..17...51M (2021-06-05)
383«The Hyades age anticenter cluster NGC 2266» Kaluzny, Janusz ; Mazur, Beata; Acta Astron., Vol. 41, p. 191-212 (1991); Bibcode:1991AcA....41..191K; ui.adsabs.harvard.edu/abs/1991AcA....41..191K (2021-06-05)
390«New Planetary and Peculiar Gaseous Nebulae» Vorontsov-Vel'Yaminov, B. A.; Soviet Astronomy, Vol. 5, p.278, October 1961; Bibcode:1961SvA.....5..278V
402«Second list of diffuse nebulae» Gaze, V. F. ; Shajn, G. A.; Izv. Krym. Astrofiz. Obs., Vol. 7, p. 93-98 (1951); Bibcode:1951IzKry...7...93G; ui.adsabs.harvard.edu/abs/1951IzKry...7...93G (2021-07-04)
404«The nature of the nebulae A21 (YM 29) and Simeiz 22» Arkhipova, V. P. ; Lozinskaya, T. A.; Soviet Astronomy Letters, vol. 4, Jan.-Feb. 1978, p. 7-10; Bibcode:1978SvAL....4....7A
423«New diffuse and planetary nebulae» A. Krasnogorskaya; Astron. Tsirk., 230, 11-13 (1962); Bibcode:1962ATsir.230...11K; ui.adsabs.harvard.edu/abs/1962ATsir.230...11K/abstract (2021-08-26)
451«Nuevas Estrellas con Emisión en las regiones obscuras del Toro-Auriga-Orion investigadas por Joyi» Haro, G. ; Iriarte, B. ; Chavira, E.; Boletín de los Observatorios de Tonantzintla y Tacubaya Vol. 1 Num. 8, pp. 3-18 (1953); Bibcode:1953BOTT....1h...3H; ui.adsabs.harvard.edu/abs/1953BOTT....1h...3H/abstract
455«On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters.» Collinder, Per; Annals of the Observatory of Lund, vol. 2, pp.B1-B46, 1931; Bibcode:1931AnLun...2....1C; ui.adsabs.harvard.edu/abs/1931AnLun...2....1C/abstract
461«The Planetary Nebulae» Curtis, H. D.; Publications of Lick Observatory, vol. 13, pp.55-74, 1918; Bibcode:1918PLicO..13...55C; ui.adsabs.harvard.edu/abs/1918PLicO..13...55C (2022-01-01)
470«Galaxies with an ultraviolet continuum» Markarian, B. E.; Astrofizika, Vol. 3, p. 24-38 (1967); Bibcode:1967Afz.....3...24M
491«Clues on the Structure and Composition of Galactic Disks from Studies of 'Superthin' Spirals: the Case of UGC3697» Matthews, Lynn search by orcid ; Uson, Juan M.; Proceedings of Baryons in Dark Matter Halos. Novigrad, Croatia, 5-9 Oct 2004.; arXiv:arXiv:astro-ph/0412391; Bibcode:2004bdmh.confE..70M
532«A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems» Holmberg, Erik; Annals of the Observatory of Lund, vol. 6, pp.1-173, 1937; Bibcode:1937AnLun...6....1H
570«Catalogue of star clusters and associations» Alter, G. ; Ruprecht, J. ; Vanýsek, V.; Prague, Pub. House of the Czechoslavak Academy of Sciences, 1958.; Bibcode:1958csca.book.....A
575«Some Characteristics of Complexes of Open Star Clusters» Barkhatova, K. A. ; Osipkov, L. P. ; Kutuzov, S. A.; Soviet Astronomy, Vol.33, NO. 6/NOV, P.596, 1989; Bibcode:1989SvA....33..596B
579«NGC 2362: The Terminus of Star Formation» Dahm, S. E.; Handbook of Star Forming Regions, Volume II: The Southern Sky ASP Monograph Publications, Vol. 5. Edited by Bo Reipurth, p.26; December 2008; arXiv:0808.3815; Bibcode:2008hsf2.book...26D

Boooks and Atlases

1«Atlas der schönsten Himmelsobjekte» von Hans Vehrenberg; 4. Auflage von «Mein Messier-Buch», Nachdruck 1985; Treugesell-Verlag KG, Düsseldorf
2«Signale von anderen Welten» von Prof. Frank Drake und Dava Sobel; Bechtermünz Verlag; ISBN 3-86047-769-2
3«Bildatlas des Weltraums» von Antonin Rükl, Verlag Werner Dausien, ISBN 3-7684-2808-7
4«Burnham's Celestial Handbook: An Observer's Guide to the Universe Beyond the Solar System» by Robert Burnham; Dover Publications, Inc.; Voume I: ISBN 0-486-23567-X; Volume II: ISBN 0-486-23568-8; Volume III: ISBN 0-486-23673-0
5«Cambridge Star Atlas 2000.0» by Wil Tirion; Cambridge University Press; ISBN 0-521-26322-0
6«Das neue Lexikon; Band 1-10»; Weltbild Verlag; © Bibliographisches Institut, Mannheim 1984
7«Der grosse Kosmos-Himmelsführer» von Ian Ridpath und Wil Tirion; Kosmos Verlag; ISBN 3-440-05787-9
8«Der Sternenhimmel: Begleiter zum Jahrbuch» von Ernst Hügli, Hans Roth und Karl Städeli; Salle + Sauerländer, ISBN 3-7941-2841-9 (Sauerländer), ISBN 3-7935-5024-9 (Salle)
9«Drehbare Sternkarte SIRIUS» von H. Suter-Haug; Hallwag-Verlag, Bern
10«dtv-Atlas zur Astronomie» von Joachim Herrmann; Deutscher Taschenbuch Verlag; ISBN 3-423-03006-2
12«The Night Sky Observer's Guide, Volume I» George Robert Kepple, Glen W. Sanner, Willman-Bell, Inc., ISBN 0-943396-58-1
13«The Night Sky Observer's Guide, Volume II» George Robert Kepple, Glen W. Sanner, Willman-Bell, Inc., ISBN 0-943396-60-3
15«Hartung's Astronomical Objects for Southern Telescopes» by David Malin and David J. Frew; Melbourne University Press 1995; ISBN 0-522-84553-3
17«Planetary Nebulae: A Practical Guide and Handbook for Amateur Astronomers» by Steven J. Hynes; 1991, Willmann-Bell, Inc., Richmond Virginia; ISBN 0-943396-30-1
18«Sky Atlas 2000.0» by Wil Tirion; Cambridge University Press; ISBN 0-521-24467-6
20«Sternbilder und ihre Mythen» von Gerhard Fasching; Zweite, verbesserte Auflage; Springer Verlag Wien, New York; ISBN 3-211-82552-5 (Wien); ISBN 0-387-82552-5 (New York)
21«Taschenatlas der Sternbilder» von Josef Klepesta und Antonin Rükl; Verlag Werner Dausien; ISBN 3-7684-2384-0
22«The Deep Sky Field Guide to Uranometria 2000.0» by Murray Cragin, James Lucik and Barry Rappaport; Willmann-Bell, Inc.; ISBN 0-943396-38-7
23«Uranometria 2000.0, Volume I» by Wil Tirion, Barry Rappaport and George Lovi; Willmann-Bell, Inc.; ISBN 0-943396-14-X
24«Uranometria 2000.0, Volume II» by Wil Tirion, Barry Rappaport and George Lovi; Willmann-Bell, Inc.; ISBN 0-943396-15-8
25«Das Taschenbuch vom Sternenhimmel» von Peter von Eynern; Wilhelm Heyne Verlag, München, 1972
26«Visual Astronomy of the Deep Sky» by Roger N. Clark; Cambridge University Press
27«Der Komet» von Carl Sagan und Ann Druyan; Buchclub Ex Libris Zürich

Bulletin of the Astronomical Institute of Czechoslovakia

391«Morphological study of planetary nebulae. I. Observed forms of planetary nebulae.» Kromov, G. S.; Kohoutek, L.; Bulletin of the Astronomical Institutes of Czechoslovakia, Vol. 19, p. 1-11 (1968); Bibcode:1968BAICz..19....1K; ui.adsabs.harvard.edu/abs/1968BAICz..19....1K (2021-06-13)
436«New planetary nebulae» Kohoutek, L.; Bulletin of the Astronomical Institute of Czechoslovakia, vol. 14, p.70, 1963; Bibcode:1963BAICz..14...70K; ui.adsabs.harvard.edu/abs/1963BAICz..14...70K (2021-09-27)
542«Classification of open star clusters» Ruprecht, J.; Bulletin of the Astronomical Institute of Czechoslovakia, vol. 17, p.33, 1966; Bibcode:1966BAICz..17...33R
545«Hamburg Schmidt-camera survey of faint planetary nebulae» Kohoutek, L.; Bulletin of the Astronomical Institute of Czechoslovakia, vol. 16, p.221, 1965; Bibcode:1965BAICz..16..221K

Centre de Données astronomiques de Strasbourg (CDS)

16Centre de Données astronomiques de Strasbourg; cds.u-strasbg.fr
141Strasbourg-ESO Catalogue of Galactic Planetary Nebulae; A. Acker, F. Ochsenbein, B. Stenholm, R. Tylenda, J. Marcout, C. Schohn; European Southern Observatory; ISBN 3-923524-41-2 (1992); Bibcode:1992secg.book.....A; cdsarc.u-strasbg.fr/viz-bin/cat/V/84
142NGC 2000.0, The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J.L.E. Dreyer; edited by Roger W. Sinnott; Sky Publishing Corporation and Cambridge University Press (1988); cdsarc.unistra.fr/viz-bin/cat/VII/118 (2021-02-18)
143Catalogue of Galactic Globular Clusters; R. Monella, 1985; Coelum LIII, 287; cdsarc.u-strasbg.fr/viz-bin/cat/VII/103
144Catalogue of Principal Galaxies (PGC); Paturel G., Fouque P., Bottinelli L., Gouguenheim L.; Astron. Astrophys. Suppl. Ser. 80, 299 (1989); cdsarc.unistra.fr/viz-bin/cat/VII/119 (2021-02-18)
145SIMBAD astronomical database; simbad.u-strasbg.fr/simbad
147Aladin Lite; aladin.u-strasbg.fr/AladinLite (2020-12-23)
226HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003); cdsarc.unistra.fr/viz-bin/cat/VII/237 (2021-01-13)
459«Uppsala General Catalogue of Galaxies (UGC)» Nilson 1973; cdsarc.cds.unistra.fr/viz-bin/cat/VII/26D (2021-12-23)

ETH Bibliothek Zürich

11«Results of astronomical observations made during the years 1834, 5, 6, 7, 8, at the Cape of Good Hope ... : being the completion of a telescopic survey of the whole surface of the visible heavens, commenced in 1825» Herschel, John F. W.; London : published by Smith, Elder and Co., 1847; DOI:10.3931/e-rara-22242
14«Coelum australe stelliferum» N. L. de Lacaille; Parisiis : sumptibus Hipp. Lud. Guerin et Lud. Fr. Delatour, 1763; DOI:10.3931/e-rara-529
19«Prodromus Astronomiae» Johannes Hevelius, 1690; DOI:10.3931/e-rara-456
28«Uranometria omnium asterismorum continens schemata, nova methodo delineata aereis laminis expressa» Johann Bayer, Augsburg, 1603; DOI:10.3931/e-rara-309

European Southern Observatory (ESO)

195ESO Online Digitized Sky Survey; archive.eso.org/dss/dss (2020-12-27)
208New ESO’s VLT image of the Skull Nebula; eso.org/public/images/eso2019a (2020-12-30)
221NGC 2264 and the Christmas Tree cluster; eso.org/public/images/eso0848a (2021-01-08)
229MUSE image of the Saturn Nebula; eso.org/public/images/eso1731a (2021-01-17)
236Spiral galaxy NGC 1097; eso.org/public/images/eso0438d (2021-01-20)
275Barnard's Galaxy; eso.org/public/images/eso0938a (2021-02-17)
279VISTA infrared image of the globular star cluster Messier 55; eso.org/public/unitedkingdom/images/eso1220a (2021-02-19)
284The edge-on galaxy NGC 1055; eso.org/public/unitedkingdom/images/eso1707a (2021-02-26)
292Why so blue?; eso.org/public/images/potw1636a (2021-03-07)
412Red and Long Dead; eso.org/public/images/potw1927a (2021-07-26)
511Spiral galaxy NGC 253; eso.org/public/usa/images/eso0902c (2022-10-16)
520VISTA-Infrarotaufnahme des Katzenpfotennebels; eso.org/public/germany/images/eso1017a (2022-06-07)
546eso1317de-ch — Bildveröffentlichung Eine geisterhafte grüne Blase Schnappschuss eines Planetarischen Nebels vom VLT der ESO, 10. April 2013; eso.org/public/switzerland-de/news/eso1317 (2022-10-03)
553Arp 271 — galaxies drawn together; eso.org/public/usa/images/potw1035a (2022-10-11)
556eso1237 — Photo Release: The Rich Colours of a Cosmic Seagull; 26 September 2012; Richard Hook, ESO, La Silla, Paranal, E-ELT & Survey Telescopes Public Information Officer, Garching bei München, Germany; eso.org/public/usa/news/eso1237 (2022-10-12)
557eso1306 — Photo Release: The Wings of the Seagull Nebula; 6 February 2013; Richard Hook, ESO, La Silla, Paranal, E-ELT & Survey Telescopes Press Officer, Garching bei München, Germany; eso.org/public/usa/news/eso1306 (2022-10-12)
558eso1913 — Photo Release: «Anatomy of a Cosmic Seagull, ESO’s VST captures a celestial gull in flight» 7 August 2019; Mariya Lyubenova, ESO Head of Media Relations Team, Garching bei München, Germany; eso.org/public/usa/news/eso1913 (2022-10-12)
581Starshine in Canis Major; eso.org/public/images/potw1911a (2023-01-19)
591NGC 2467 and surroundings; eso.org/public/images/eso0544a (2023-02-11)

European Space Agency (ESA)

182The Inky Abyss; esahubble.org/images/potw1932a (2020-12-22)
184Iridescent Glory of Nearby Planetary Nebula Showcased on Astronomy Day; esahubble.org/images/heic0307a (2020-12-23)
185Hubble image of M101; esahubble.org/images/opo0907h (2020-12-23)
186Seeing double; esahubble.org/images/potw1403a (2020-12-23)
187Hubble's planetary nebula gallery. A view of NGC 6826; esahubble.org/images/opo9738d (2020-12-24)
188Out of this whirl: The Whirlpool Galaxy (M51) and companion galaxy; esahubble.org/images/heic0506a (2020-12-24)
189Messier 61 looks straight into the camera; esahubble.org/images/potw1324a (2020-12-24)
191A hungry starburst galaxy; esahubble.org/images/potw1417a (2020-12-24)
198The belly of the cosmic whale; esahubble.org/images/potw1146a (2020-12-28)
205Twins with differences; esahubble.org/images/potw1805a (2020-12-30)
213Quasar 3C 273; esahubble.org/images/opo0303c (2020-12-31)
214Most detailed image of the Crab Nebula; esahubble.org/images/heic0515a (2020-12-31)
216Old stars with a youthful glow; esahubble.org/images/potw1107a (2020-12-31)
220Hubble's variable nebula (NGC 2261); esahubble.org/images/opo9935c (2021-01-08)
222The largest of its kind; esahubble.org/images/potw1913a (2021-01-10)
223Blue rejuvenation; esahubble.org/images/potw1914a (2021-01-10)
224Hubble views a cosmic oyster and pearl in NGC 1501; esa.int/ESA_Multimedia/Images/2016/09/Hubble_views_a_cosmic_oyster_and_pearl_in_NGC_1501 (2021-01-10)
234NGC 7009 illustration; esahubble.org/images/opo9738m (2021-01-19)
241The crammed centre of Messier 22; esahubble.org/images/potw1514a (2021-01-22)
245Bucking the trend; esahubble.org/images/potw1921a (2021-01-22)
249Ancient orbs; esahubble.org/images/potw1236a (2021-01-24)
250Breathing new life into an old cluster; esahubble.org/images/potw1118a (2021-01-24)
259A galactic sunflower; esahubble.org/images/potw1536a (2021-02-06)
262Vampires and collisions rejuvenate stars; esahubble.org/news/heic0918 (2021-02-08)
273Invisible X-rays; esahubble.org/images/potw1911a (2021-02-15)
280A collection of ancient stars; esahubble.org/images/potw1234a (2021-02-19)
290Spotlight on IC 3583; esahubble.org/images/potw1648a (2021-03-02)
300HERSCHEL IMAGE OF IC 5146; sci.esa.int/web/herschel/-/48624-herschel-image-of-ic-5146 (2021-03-31)
301The two mysterious populations of NGC 2419; esahubble.org/images/potw1908a (2021-04-06)
323A remote outpost of the Milky Way; esahubble.org/images/potw1137a (2021-05-02)
343Hubble images searchlight beams from a preplanetary nebula; esahubble.org/images/potw1217a (2021-05-12)
350Smoky shells; esahubble.org/images/potw1250a (2021-05-16)
353NGC 1579: The Trifid of the North; esahubble.org/images/potw1322a (2021-05-21)
368Family of stars breaking up; esahubble.org/images/potw1111a (2021-05-30)
373A unique cluster: one of the hidden 15; esa.int/ESA_Multimedia/Images/2013/04/A_unique_cluster_one_of_the_hidden_15 (2021-05-31)
406A curious ring in star factory NGC 7538; sci.esa.int/s/WLGZKbw (2021-07-07)
409A young star takes centre stage; esahubble.org/images/potw1509a (2021-07-10)
415Abell 30: a born-again planetary nebula; esa.int/ESA_Multimedia/Images/2012/11/Abell_30_a_born-again_planetary_nebula (2021-07-30)
427Hubble’s Hidden Galaxy; esahubble.org/images/potw1727a (2021-08-29)
435Spiral, elliptical, irregular; esahubble.org/images/potw1924a (2021-09-26)
440Spiral spins both ways; esahubble.org/images/potw1125a (2021-10-03)
456Hubble reveals NGC 2440; esahubble.org/images/heic0703a (2021-12-20)
496Rare cosmic footprint; esahubble.org/images/potw1128a (2022-02-22)
516Hubble Looks at a ‘Space Triangle’ Spawned by a Galaxy Collision; esahubble.org/news/heic2201 (2022-04-29)
517Hubble spies a UFO; esahubble.org/images/potw1213a (2022-05-01)
521NGC 6302; esahubble.org/images/heic2011b (2022-06-09)
534A dazzling planetary nebula; esahubble.org/images/potw1034a (2022-09-20)
536Little gem; esahubble.org/images/potw1531a (2022-09-22)
540The Spirograph Nebula; esahubble.org/images/opo0028a (2022-09-30)
563Young star rebels against its parent cloud; esa.int/Science_Exploration/Space_Science/Young_star_rebels_against_its_parent_cloud (2021-04-11)
565heic2205 — Photo Release: Celebrating Hubble’s 32nd Birthday with a Galaxy Grouping; esahubble.org/news/heic2205 (2022-11-06)
566Hubble views a bizarre cosmic quartet [HEIC1514]; sci.esa.int/web/hubble/-/56054-hubble-views-a-bizarre-cosmic-quartet-heic1514 (2022-11-07)
578heic0109 — Photo Release: Surfing in Sagittarius - not for the faint-hearted!; esahubble.org/news/heic0109 (2023-01-16)
585A Distant backwater of the Milky Way; esahubble.org/images/potw1023a (2023-01-28)
587Globular cluster NGC 4147; esahubble.org/images/heic1905c (2023-02-04)
589IC 4593; esahubble.org/images/opo0733d (2023-02-04)

International Astronomical Union (IAU)

150IAU: The Constellations, 11. Oktober 2020; iau.org/public/themes/constellations
393«New and misclassified planetary nebulae.» IAU Symp. 76, held at Cornell University, Ithaca, New York, USA, june 6-10, 1977. Planetary nebulae. Observations and theory. Ed by Y. Terzian., 47-62 (1978); Bibcode:1978IAUS...76...47K; ui.adsabs.harvard.edu/abs/1978IAUS...76...47K (2021-06-13)
512Central Bureau for Astronomical Telegrams, Electronic Telegram No. 1876, 2009 July 16; cbat.eps.harvard.edu/iau/cbet/001800/CBET001876.txt (2022-04-21)


93Objekte der Saison: Cr 399 von Jürgen Lamprecht; Interstellarum3/95, S.48
94Objekte der Saison: PK 205+14.1 von Ronald C. Stoyan; Interstellarum1/96, S.54
95Objekte der Saison: 3C 273 von Klaus Veit; Interstellarum2/96, S.50
96Objekte der Saison: NGC 4169/73/74/75 von Klaus Veit; Interstellarum2/96, S.52
97Objekte für lange Brennweiten: Die Galaxie M63 von Peter Riepe und Stefan Binnewies; Interstellarum2/96, S.60
98Objekte der Saison: M92 von Jürgen Lamprecht; Interstellarum3/95, S.53

Memoirs of the Royal Astronomical Society

313«A New General Catalogue of Nebulae and Clusters of Stars, being the Catalogue of the late Sir John F.W. Herschel, Bart., revised, corrected, and enlarged» Dreyer, J. L. E. (1888); Memoirs of the Royal Astronomical Society. 49: 1–237; Bibcode:1888MmRAS..49....1D; ui.adsabs.harvard.edu/abs/1888MmRAS..49....1D/abstract (2021-04-14)
314«Index Catalogue of Nebulæ found in the years 1888 to 1894, with Notes and Corrections to the New General Catalogue» Dreyer, J. L. E.; Memoirs of the Royal Astronomical Society, Vol. 51, p.185; 1895; Bibcode:1895MmRAS..51..185D; ui.adsabs.harvard.edu/abs/1895MmRAS..51..185D/abstract (2021-04-14)
315«Second Index Catalogue of Nebulae and Clusters of Stars; containing objects found in the years 1895 to 1907, with Notes and Corrections to the New General Catalogue and to the Index Catalogue for 1888–94» Dreyer, J. L. E. (1910); Memoirs of the Royal Astronomical Society. 59: 105–198; Bibcode:1910MmRAS..59..105D; ui.adsabs.harvard.edu/abs/1910MmRAS..59..105D/abstract (2021-04-14)
400«Young stellar objects in NGC 6823» B. Riaz, E. L. Martín, R. Tata, J.-L. Monin, N. Phan-Bao, H. Bouy; Monthly Notices of the Royal Astronomical Society, Volume 419, Issue 3, January 2012, Pages 1887–1912; DOI:10.1111/j.1365-2966.2011.19841.x
555«A Survey of Southern HII Regions» Gum, Colin S.; Memoirs of the Royal Astronomical Society, Vol. 67, p.155, 1955; Bibcode:1955MmRAS..67..155G

Monthly Notices of the Royal Astronomical Society (MNRAS)

101«A stellar diamond in Virgo» N. Brosch; Monthly Notices of the Royal Astronomical Society, Volume 253, Issue 3, December 1991, Pages 545–548; DOI:10.1093/mnras/253.3.545
260«A census of young stellar population associated with the Herbig Be star HD 200775» Piyali Saha, Maheswar G., Kamath U. S., Lee C. W, Manoj P., Blesson Mathew, Ekta Sharma; Monthly Notices of the Royal Astronomical Society, Volume 494, Issue 4, June 2020, Pages 5851–5871; arXiv:2005.00519; DOI:10.1093/mnras/staa1053
285«Spiral structure of the Third Galactic Quadrant and the solution to the Canis Major debate» A. Moitinho, R.A. Vazquez, G. Carraro, G. Baume, E.E Giorgi, W. Lyra; arXiv:astro-ph/0602493v1; DOI:10.1111/j.1745-3933.2006.00163.x; arxiv.org/abs/astro-ph/0602493 (2021-02-27)
312«Variable stars in young open star cluster NGC 7380» Sneh Lata, A. K. Pandey, Neelam Panwar, W. P. Chen, M. R. Samal, J. C. Pandey; arXiv:1511.08892; DOI:10.1093/mnras/stv2800
316«Corrections to the New General Catalogue resulting from the revision of Sir William Herschel's Three Catalogues of Nebulae» Dreyer, J. L. E. (1912); Monthly Notices of the Royal Astronomical Society. 73: 37–40.; DOI:10.1093/mnras/73.1.37; Bibcode:1912MNRAS..73...37D; ui.adsabs.harvard.edu/abs/1912MNRAS..73...37D/abstract (2021-04-14)
320«Sejong Open Cluster Survey (SOS) – III. The young open cluster NGC 1893 in the H II region W8» Beomdu Lim, Hwankyung Sung, Jinyoung S. Kim, Michael S. Bessell, Byeong-Gon Park Monthly Notices of the Royal Astronomical Society, Volume 443, Issue 1, 1 September 2014, Pages 454–473; DOI:10.1093/mnras/stu1170; academic.oup.com/mnras/article/443/1/454/1489028 (2021-04-22)
321«The interaction of the planetary nebula NGC 6894 with the ISM magnetic field» Soker, Noam; Zucker, Daniel B.; Monthly Notices of the Royal Astronomical Society, Volume 289, Issue 3, pp. 665-670.; August 1997; DOI:10.1093/mnras/289.3.665; Bibcode:1997MNRAS.289..665S; ui.adsabs.harvard.edu/abs/1997MNRAS.289..665S/abstract (2021-05-01)
322«Near-infrared spectroscopy of (proto)-planetary nebulae: molecular hydrogen excitation as an evolutionary tracer» Christopher J. Davis, Michael D. Smith, Luke Stern, Thomas H. Kerr, Jean E. Chiar; Monthly Notices of the Royal Astronomical Society, Volume 344, Issue 1, September 2003, Pages 262–282; DOI:10.1046/j.1365-8711.2003.06820.x; academic.oup.com/mnras/article/344/1/262/1010312 (2021-05-02)
339«Pushing the limits: detecting H2 emission from faint bipolar planetary nebulae in the IPHAS sample» G. Ramos-Larios, M. A. Guerrero, L. Sabin, E. Santamaría; Monthly Notices of the Royal Astronomical Society, Volume 470, Issue 3, September 2017, Pages 3707–3719; DOI:10.1093/mnras/stx1519; academic.oup.com/mnras/article/470/3/3707/3869624 (2021-05-12)
358«Large-scale star formation in Auriga region» A K Pandey, Saurabh Sharma, N Kobayashi, Y Sarugaku, K Ogura; Monthly Notices of the Royal Astronomical Society, Volume 492, Issue 2, February 2020, Pages 2446–2467,; DOI:10.1093/mnras/stz3596; academic.oup.com/mnras/article/492/2/2446/5687346 (2021-05-22)
362«Young star clusters and the structure of the second Galactic quadrant II» J A Molina Lera, G Baume, R Gamen; Monthly Notices of the Royal Astronomical Society, Volume 488, Issue 2, September 2019, Pages 2158–2174; DOI:10.1093/mnras/stz1710
370«On the extended stellar structure around NGC 288» Andrés E. Piatti; Monthly Notices of the Royal Astronomical Society, Volume 473, Issue 1, January 2018, Pages 492–497; DOI:10.1093/mnras/stx2471
371«Rediscovering the tidal tails of NGC 288 with Gaia DR2» Kaderali, Shaziana; Hunt, Jason A. S.; Webb, Jeremy J.; Price-Jones, Natalie; Carlberg, Raymond; Monthly Notices of the Royal Astronomical Society: Letters, Volume 484, Issue 1, p.L114-L118; March 2019; arXiv:1809.04108; DOI:10.1093/mnrasl/slz015
372«Lifting the dust veil from the globular cluster Palomar 2» Charles Bonatto, Ana L Chies-Santos; Monthly Notices of the Royal Astronomical Society, Volume 493, Issue 2, April 2020, Pages 2688–2693; arXiv:2002.08812; DOI:10.1093/mnras/staa510
378«X-ray and radio observations of the γ Cygni supernova remnant G78.2+2.1» D. A. Leahy, K. Green, S. Ranasinghe Monthly Notices of the Royal Astronomical Society, Volume 436, Issue 2, 01 December 2013, Pages 968–977; DOI:10.1093/mnras/stt1596
381«Comprehensive abundance analysis of red giants in the open clusters NGC 2527, 2682, 2482, 2539, 2335, 2251 and 2266» Arumalla B. S. Reddy, Sunetra Giridhar, David L. Lambert; Monthly Notices of the Royal Astronomical Society, Volume 431, Issue 4, 1 June 2013, Pages 3338–3348; DOI:10.1093/mnras/stt412
386«Linking the rotation of a cluster to the spins of its stars: the kinematics of NGC 6791 and NGC 6819 in 3D» S Kamann, N J Bastian, M Gieles, E Balbinot, V Hénault-Brunet; Monthly Notices of the Royal Astronomical Society, Volume 483, Issue 2, February 2019, Pages 2197–2206; arXiv:1811.08476; DOI:10.1093/mnras/sty3144
401«ETHOS 1: a high-latitude planetary nebula with jets forged by a post-common-envelope binary central star» B. Miszalski, R. L. M. Corradi, H. M. J. Boffin, D. Jones, L. Sabin, M. Santander-García, P. Rodríguez-Gil, M. M. Rubio-Díez; Monthly Notices of the Royal Astronomical Society, Volume 413, Issue 2, May 2011, Pages 1264–1274; DOI:10.1111/j.1365-2966.2011.18212.x
405«The shaping of planetary nebula Sh 2–188 through interaction with the interstellar medium» C. J. Wareing, T. J. O'Brien, Albert A. Zijlstra, K. B. Kwitter, J. Irwin, N. Wright, R. Greimel, J. E. Drew; Monthly Notices of the Royal Astronomical Society, Volume 366, Issue 2, February 2006, Pages 387–396; DOI:10.1111/j.1365-2966.2005.09875.x
413«Physical conditions in the planetary nebula Abell 30» R. Wesson, X.-W. Liu, M. J. Barlow; Monthly Notices of the Royal Astronomical Society, Volume 340, Issue 1, March 2003, Pages 253–263; DOI:10.1046/j.1365-8711.2003.06289.x
414«Abell 30 - A binary central star among the born-again planetary nebulae» George H Jacoby, Todd C Hillwig, David Jones; Monthly Notices of the Royal Astronomical Society: Letters, Volume 498, Issue 1, October 2020, Pages L114–L118; arXiv:2008.01488; DOI:10.1093/mnrasl/slaa138
420«Nébuleuses nouvelles découvertes et observées à l'Observatoire de Marseille» Par M. E. Stephan; Monthly Notices of the Royal Astronomical Society, Volume 37, Issue 6, April 1877, Pages 334–339; DOI:10.1093/mnras/37.6.334
429«The young nuclear stellar disc in the SB0 galaxy NGC 1023» E. M. Corsini, L. Morelli, N. Pastorello, E. Dalla Bontà, A. Pizzella, E. Portaluri; Monthly Notices of the Royal Astronomical Society, Volume 457, Issue 2, 01 April 2016, Pages 1198–1207; DOI:10.1093/mnras/stv2864
438«A multiwavelength study of the starburst galaxy NGC 7771» Richard I. Davies, Almudena Alonso-Herrero, Martin J. Ward; Monthly Notices of the Royal Astronomical Society, Volume 291, Issue 3, November 1997, Pages 557–568; DOI:10.1093/mnras/291.3.557
446«NGC 474 as viewed with KCWI: diagnosing a shell galaxy» Adebusola B Alabi, Anna Ferré-Mateu, Duncan A Forbes, Aaron J Romanowsky, Jean P Brodie; Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 1, September 2020, Pages 626–631; DOI:10.1093/mnras/staa1992
447«Discovery of an open cluster with a possible physical association with a planetary nebula» C. Bonatto, E. Bica, J. F. C. Santos, Jr; Monthly Notices of the Royal Astronomical Society, Volume 386, Issue 1, 1 May 2008, Pages 324–336; DOI:10.1111/j.1365-2966.2008.13042.x
458«Galaxy groups and clouds in the local (z∼ 0.01) Universe» Dmitry Makarov, Igor Karachentsev; Monthly Notices of the Royal Astronomical Society, Volume 412, Issue 4, April 2011, Pages 2498–2520; DOI:10.1111/j.1365-2966.2010.18071.x
475«New Herbig–Haro objects and outflows in the Mon R1 association» T A Movsessian, T Yu Magakian, S N Dodonov; Monthly Notices of the Royal Astronomical Society, Volume 500, Issue 2, January 2021, Pages 2440–2450; DOI:10.1093/mnras/staa3302
489«Optical and infrared imaging and spectroscopy of the multiple-shell planetary nebula NGC 6369» G. Ramos-Larios, M. A. Guerrero, R. Vázquez, J. P. Phillips; Monthly Notices of the Royal Astronomical Society, Volume 420, Issue 3, March 2012, Pages 1977–1989; DOI:10.1111/j.1365-2966.2011.20075.x
505«Hu 1-2: a metal-poor bipolar planetary nebula with fast collimated outflows» X. Fang, M. A. Guerrero, L. F. Miranda, A. Riera, P. F. Velázquez, A. C. Raga; Monthly Notices of the Royal Astronomical Society, Volume 452, Issue 3, 21 September 2015, Pages 2445–2462; DOI:10.1093/mnras/stv1477
524«Gas motions in the plane of the spiral galaxy NGC 3631» A. M. Fridman, O. V. Khoruzhii, E. V. Polyachenko, A. V. Zasov, O. K. Sil'Chenko, A. V. Moiseev, A. N. Burlak, V. L. Afanasiev, S. N. Dodonov, J. H. Knapen; Monthly Notices of the Royal Astronomical Society, Volume 323, Issue 3, May 2001, Pages 651–662; DOI:10.1046/j.1365-8711.2001.04218.x
541«Discovery of multiple shells around the planetary nebula IC 418» G. Ramos-Larios, R. Vázquez, M. A. Guerrero, L. Olguín, R. A. Marquez-Lugo, H. Bravo-Alfaro; Monthly Notices of the Royal Astronomical Society, Volume 423, Issue 4, July 2012, Pages 3753–3760; DOI:10.1111/j.1365-2966.2012.21165.x
543«NGC 6749: a metal-poor halo globular cluster in a disc field rich in Mira variables» L. Rosino, S. Ortolani, B. Barbuy, E. Bica; Monthly Notices of the Royal Astronomical Society, Volume 289, Issue 3, August 1997, Pages 745–752; DOI:10.1093/mnras/289.3.745
547«NGC 6712: the variable star population of a tidally disrupted globular cluster» D Deras, A Arellano Ferro, C Lázaro, I H Bustos Fierro, J H Calderón, S Muneer, Sunetra Giridhar; Monthly Notices of the Royal Astronomical Society, Volume 493, Issue 2, April 2020, Pages 1996–2014; DOI:10.1093/mnras/staa196
583«Mass modelling of superthin galaxies: IC5249, UGC7321 and IC2233» Arunima Banerjee, Disha Bapat Monthly Notices of the Royal Astronomical Society, Volume 466, Issue 3, April 2017, Pages 3753–3761, December 2016; DOI:10.1093/mnras/stw3219
586«The triple-shell structure and collimated outflows of the planetary nebula NGC 6891» Martín A. Guerrero, Luis F. Miranda, Arturo Manchado, Roberto Vázquez; Monthly Notices of the Royal Astronomical Society, Volume 313, Issue 1, March 2000, Pages 1–7; DOI:10.1046/j.1365-8711.2000.03159.x
588«A search for stellar tidal debris of defunct dwarf galaxies around globular clusters in the inner Galactic halo» Julio A. Carballo-Bello, Antonio Sollima, David Martínez-Delgado, Berenice Pila-Díez, Ryan Leaman, Jürgen Fliri, Ricardo R. Muñoz, Jesús M. Corral-Santana Monthly Notices of the Royal Astronomical Society, Volume 445, Issue 3, 11 December 2014, Pages 2971–2993; DOI:10.1093/mnras/stu1949
590«Chemical analysis of eight giant stars of the globular cluster NGC 6366» Arthur A Puls, Alan Alves-Brito, Fabíola Campos, Bruno Dias, Beatriz Barbuy Monthly Notices of the Royal Astronomical Society, Volume 476, Issue 1, May 2018, Pages 690–704; DOI:10.1093/mnras/sty267
593«The Gaia view of the Cepheus flare» Máté Szilágyi, Mária Kun, Péter Ábrahám Monthly Notices of the Royal Astronomical Society, Volume 505, Issue 4, August 2021, Pages 5164–5182; DOI:10.1093/mnras/stab1496
595«Spatio-kinematic modelling of Abell 65, a double-shelled planetary nebula with a binary central star» L. Huckvale, B. Prouse, D. Jones, M. Lloyd, D. Pollacco, J. A. López, T. J. O'Brien, L. Sabin, N. M. H. Vaytet Monthly Notices of the Royal Astronomical Society, Volume 434, Issue 2, 11 September 2013, Pages 1505–1512; arXiv:1306.4272; DOI:10.1093/mnras/stt1109

NASA/IPAC Extragalactic Database (NED)

194NASA/IPAC Extragalactic Database (NED); ned.ipac.caltech.edu (2020-12-27)
432«The Atlas and Catalogue of Interacting Galaxies» B.A. Vorontsov-Velyaminov (Moscow 1959); ned.ipac.caltech.edu/level5/VV_Cat/frames.html (2021-09-25)

National Aeronautics and Space Administration (NASA)

151Hubble's sharpest view of the Orion Nebula; hubblesite.org/contents/media/images/2006/01/1826-Image.html (2021-01-03)
170Crab Nebula -- The Movie; Press Release No. STScI-PRC96-22; hubblesite.org/contents/news-releases/1996/news-1996-22.html
178Happy Sweet Sixteen, Hubble Telescope! – Starburst Galaxy M82; hubblesite.org/contents/media/images/2006/14/1876-Image.html (2020-12-21)
179Hubble/Galex/Spitzer Composite Image Of M81; hubblesite.org/contents/media/images/2007/19/2130-Image.html (2020-12-21)
180Hubble Photographs Grand Design Spiral Galaxy M81; hubblesite.org/contents/media/images/2007/19/2127-Image.html (2020-12-21)
181Dust Band Around The Nucleus Of «Black Eye Galaxy» M64; hubblesite.org/contents/media/images/2004/04/1447-Image.html (2020-12-21)
183The Majestic Sombrero Galaxy (M104); hubblesite.org/contents/media/images/2003/28/1415-Image.html (2020-12-23)
190Hubbles Messier Catalog: Messier 61; nasa.gov/feature/goddard/2017/messier-61 (2020-12-24)
200New infrared view of the Horsehead Nebula — Hubble’s 23rd anniversary image; esahubble.org/images/heic1307a (2020-12-28)
203The Tadpole Galaxy: Distorted Victim of Cosmic Collision; hubblesite.org/contents/media/images/2002/11/1181-Image.html (2020-12-29)
210NGC 5466 Visualization; hubblesite.org/video/1200/news
211Dusty Helix Nebula; spitzer.caltech.edu/images/1746-ssc2007-03a1-Dusty-Helix-Nebula (2020-12-30)
215Explore - The Night Sky | Hubble’s Messier Catalog; nasa.gov/content/goddard/hubble-s-messier-catalog (2020-12-31)
225NGC 2392; hubblesite.org/contents/media/images/2000/07/940-Image.html (2021-01-10)
230Black Hole-Powered Jet Of Electrons And Sub-Atomic Particles Streams From Center Of Galaxy M87; hubblesite.org/contents/media/images/2000/20/968-Image.html (2021-01-17)
231Full ACS image of NGC 5866; hubblesite.org/contents/media/images/2006/24/1933-Image.html (2021-01-17)
240Messier 28; nasa.gov/feature/goddard/2017/messier-28 (2021-01-22)
242HINT OF PLANET-SIZED DRIFTERS BEWILDERS HUBBLE SCIENTISTS; hubblesite.org/contents/news-releases/2001/news-2001-20.html (2021-01-22)
243Messier 60; nasa.gov/feature/goddard/2017/messier-60 (2021-01-22)
244ODD GALAXY COUPLE ON SPACE VOYAGE; September 06, 2012 9:00AM (EDT); Release ID: 2012-38; hubblesite.org/contents/news-releases/2012/news-2012-38.html (2021-01-22)
246Messier 59; nasa.gov/feature/goddard/2018/messier-59 (2021-01-22)
247THE CAT'S EYE NEBULA: DYING STAR CREATES FANTASY-LIKE SCULPTURE OF GAS AND DUST; hubblesite.org/contents/media/images/2004/27/1578-Image.html (2021-01-24)
253Witch Head Nebula; nasa.gov/multimedia/imagegallery/image_feature_1209.html (2021-01-30)
261Explore - The Night Sky | Hubble’s Caldwell Catalog; nasa.gov/content/goddard/hubble-s-caldwell-catalog (2021-02-08)
272Behind the gas and dust of Orion's trapezium cluster; hubblesite.org/contents/media/images/2000/19/967-Image.html (2021-02-14)
276Hubble X: A glowing gas cloud in the star-forming region of galaxy NGC 6822; hubblesite.org/contents/media/images/2001/01/1012-Image.html (2021-02-17)
294Spiral Galaxy Pair NGC 4302 and NGC 4298; hubblesite.org/image/4019/gallery (2021-03-10)
308Hubble Serves Up a Holiday Snow Angel; nasa.gov/mission_pages/hubble/science/snow-angel.html (2021-04-11)
334Hubble Captures Re-energized Planetary Nebula; nasa.gov/image-feature/goddard/2021/hubble-captures-re-energized-planetary-nebula (2021-05-10)
346Hubble Sees a Celestial Swan and Butterfly; nasa.gov/mission_pages/hubble/science/ngc7026.html (2021-05-14)
347PLANETARY NEBULA NGC 7027: A SUN-LIKE STAR BURNING OUT; hubblesite.org/contents/media/images/1998/11/626-Image.html (2021-05-15)
348NGC 7027: Like a Metallic Jewel Bug in the Sky; nasa.gov/image-feature/ngc-7027-like-a-metallic-jewel-bug-in-the-sky (2021-05-15)
351NGC 1333 in the Infrared; spitzer.caltech.edu/image/ssc2005-24a1-ngc-1333-in-the-infrared (2021-05-20)
352IC 59 and IC 63 in Cassiopeia; science.nasa.gov/ic-59-and-ic-63-cassiopeia (2021-05-18)
418Hubble Sees Stars That Go Out With a Whimper; nasa.gov/content/hubble-sees-stars-that-go-out-with-a-whimper (2021-08-03)
421Galactic Wreckage in Stephan's Quintet; nasa.gov/mission_pages/hubble/multimedia/ero/ero_stephan_quintet.html (2021-08-19)
431Hubble Sees Spiral in Andromeda; nasa.gov/image-feature/goddard/2017/hubble-sees-spiral-in-andromeda (2021-09-19)
460Young Stars in Their Baby Blanket of Dust; nasa.gov/mission_pages/spitzer/multimedia/20080211.html (2021-12-30)
469APM 08279+5255: Matter Near Black Hole Gets Second Lease On Life; chandra.harvard.edu/photo/2003/apm08279 (2022-01-18)
476The Mice (NGC 4676): Colliding Galaxies with Tails of Stars and Gas; hubblesite.org/contents/media/images/2002/11/1191-Image.html (2022-01-29)
477Hubble Spies Eye in the Sky; nasa.gov/image-feature/goddard/2021/hubble-spies-eye-in-the-sky (2022-01-31)
479The Glowing Eye of Planetary Nebula NGC 6751; hubblesite.org/contents/media/images/2000/12/956-Image.html (2022-02-02)
482A Turtle-Shaped Nebula, NGC 6210, and the Structure around its Star; hubblesite.org/contents/media/images/1998/36/720-Image.html (2022-02-03)
483NGC 6369: The Little Ghost Nebula - Astronomy Picture of the Day, 2017 October 28; apod.nasa.gov/apod/ap171028.html (2022-02-04)
493Hubble Sees the Wings of a Butterfly: The Twin Jet Nebula; nasa.gov/feature/goddard/hubble-sees-the-wings-of-a-butterfly-the-twin-jet-nebula (2022-02-20)
522NGC 6302; nasa.gov/mission_pages/hubble/multimedia/ero/ero_ngc6302.html (2022-06-09)
525Hubble Looks at a Face-On Grand Spiral; nasa.gov/image-feature/goddard/2022/hubble-looks-at-a-face-on-grand-spiral (2022-07-10)
530Planetary Nebula NGC 4361; spitzer.caltech.edu/image/ssc2009-15a3-planetary-nebula-ngc-4361 (2022-07-21)
531A "Rose" made of Galaxies highlights Hubble's 21st Anniversary; hubblesite.org/contents/media/images/2011/11/2836-Image.html?news=true (2022-07-24)
533Hubble Captures a Galactic Dance; nasa.gov/image-feature/goddard/2022/hubble-captures-a-galactic-dance (2022-09-16)
535Planetary Nebula NGC 6818; hubblesite.org/contents/media/images/1998/11/622-Image.html (2022-09-21)
537Round Planetary Nebula IC 3568; hubblesite.org/contents/media/images/1997/38/568-Image.html (2022-09-24)
567Seyfert's Sextet: Four Colliding Galaxies, and two Bystanders; hubblesite.org/contents/media/images/2002/22/1242-Image.html (2022-11-12)
584Starburst Galaxy NGC 1569; hubblesite.org/contents/media/images/2008/38/2424-Image.html (2023-01-21)

National Science Foundation (NSF)

158NOAO Image Gallery; noao.edu/image_gallery
197NOIRLab: Hockey Stick Galaxy NGC 4656; noirlab.edu/public/images/noao-ngc4656 (2020-12-28)
209NOAO Planetary Nebula Sampler; noao.edu/jacoby/index.html (2021-05-10)
232NOIRLab: M97, NGC 3587; noirlab.edu/public/images/noao-m97 (2021-01-19)
233NOIRLab: M108, NGC 3556; noirlab.edu/public/images/noao-m108
256Ghost Nebula, vdB 141; noirlab.edu/public/images/noao-vdb141 (2021-01-30)
283M76, NGC 650/651; noirlab.edu/public/images/noao-m76-kpno-0-9-meter (2021-02-25)
286Big Galaxy Collisions Can Stunt Star Formation; noirlab.edu/public/news/noao0808 (2021-03-01)
291M91, NGC 4548; noirlab.edu/public/images/noao-m91 (2021-03-03)
295M99; NGC 4254; noirlab.edu/public/images/noao-m99 (2021-03-10)
297Planetary nebula NGC 40; noirlab.edu/public/images/noao-ngc40w (2021-03-21)
317T Tauri in NGC 1555; noirlab.edu/public/images/noao-ttau (2021-04-14)
328Jones 1, PK 104-29.1; noirlab.edu/public/images/noao-jones1 (2021-05-05)
377Open Cluster IC 1311; noirlab.edu/public/images/noao-ic1311 (2021-06-03)
457Trio of Galaxies (NGC 5981, NGC 5982 and NGC 5985); noirlab.edu/public/images/noao-ngc5982 (2021-12-22)
481NGC 6751 Glowing Eye Nebula; gemini.edu/gallery/media/ngc-6751-glowing-eye-nebula (2022-02-02)
492Warped Disk of Galaxy UGC 3697; public.nrao.edu/gallery/warped-disk-of-galaxy-ugc-3697-2 (2022-02-09)
507noirlab1912 — Photo Release: A Galactic Dance; noirlab.edu/public/news/noirlab1912 (2022-03-29)
596Planetary Nebula Abell 74; noirlab.edu/public/images/noao-abell74 (2023-02-15)
600M19, NGC 6273; noirlab.edu/public/images/noao-m19 (2023-03-11)

Publications of the Astronomical Society of the Pacific (PASP)

264«Updated Information on the Local Group» Sidney van den Bergh (DAO/HIA/NRC); arXiv:astro-ph/0001040; DOI:10.1086/316548; arxiv.org/abs/astro-ph/0001040 (2021-02-09)
331«Globular Clusters and Planetary Nebulae Discovered on the National Geographic Society-Palomar Observatory Sky Survey» Abell, G. O.; Publications of the Astronomical Society of the Pacific, Vol. 67, No. 397, p.258-261, August 1955; DOI:10.1086/126815; Bibcode:1955PASP...67..258A; ui.adsabs.harvard.edu/abs/1955PASP...67..258A/abstract (2021-05-10)
397«New Emission Nebulae» R. Minkowski; Publications of the Astronomical Society of the Pacific, Volume 58, Number 344, 1946; DOI:10.1086/125855
416«Twelve New Planetary Nebulae» Edwin Hubble;Publications of the Astronomical Society of the Pacific, Volume 33, Number 193, 1921; DOI:10.1086/123070
448«New Results for the Open Cluster Bica 6 and Its Associated Planetary Nebula Abell 8» D. G. Turner, J. M. Rosvick, D. D. Balam, A. A. Henden, D. J. Majaess, and D. J. Lane; Publications of the Astronomical Society of the Pacific, Volume 123, Number 909; DOI:10.1086/662663
452«A New Planetary Nebula» W. Baade; Publications of the Astronomical Society of the Pacific, Volume 47, Number 276, 1935; DOI:10.1086/124563
454«NEW EMISSION NEBULAE (II)» R. Minkowski; Publications of the Astronomical Society of the Pacific, Volume 59, Number 350; 1947; DOI:10.1086/125962
504«Two New Planetary Nebulae» M. L. Humason; Publications of the Astronomical Society of the Pacific, Volume 33, Number 193, 1921; DOI:10.1086/123071
526«Two Small Planetary Nebulae» Paul W. Merrill; Publications of the Astronomical Society of the Pacific, Volume 54, Number 318, 1942; DOI:10.1086/125472
544«Three New Planetary Nebulae» Heber D. Curtis; Publications of the Astronomical Society of the Pacific, Volume 31, Number 183, 1919; DOI:10.1086/122883; Bibcode:1919PASP...31..285C
548«Extragalactic Nebulae Close to the Galactic Plane» Erika Böhm-Vitense; Publications of the Astronomical Society of the Pacific, Volume 68, Number 404, 1956; DOI:10.1086/126966
559»The Moderately Young Open Cluster NGC 2353» M. Pim Fitzgerald, Gretchen L. Harris, and B. Cameron Reed; Publications of the Astronomical Society of the Pacific, Volume 102, Number 654, 1990; DOI:10.1086/132711
569«A Dense Group of Galaxies in Serpens» Carl K. Seyfert; Publications of the Astronomical Society of the Pacific, Volume 63, Number 371, 1951; DOI:10.1086/126319
597«A Survey of Galactic Radiation at 960 Mc/s» R. W. Wilson and J. G. Bolton; Publications of the Astronomical Society of the Pacific, Volume 72, Number 428, 1960; DOI:10.1086/127538

Revista Mexicana de Astronomía y Astrofísica

450«The Structure of the Planetary Nebula IC 2149: A Jet or an Edge-On Ring?» Vázquez, R.; Miranda, L. F.; Olguín, L.; Benítez, G.; López, J. A.; Rodríguez, L. F.; Torrelles, J. M.; Ionized Gaseous Nebulae, a Conference to Celebrate the 60th Birthdays of Silvia Torres-Peimbert and Manuel Peimbert, Mexico City, November 21-24, 2000 (Eds. W. J. Henney, J. Franco, M. Martos, & M. Peña) Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 12, pp. 179-179 (2002); Bibcode:2002RMxAC..12..179V; ui.adsabs.harvard.edu/abs/2002RMxAC..12..179V/abstract
509«Discovery of New Faint Northern Galactic Planetary Nebulae» Acker, A.; Boffin, H. M. J.; Outters, N.; Miszalski, B.; Sabin, L.; Le Dû, P.; Alves, F.; Revista Mexicana de Astronomía y Astrofísica Vol. 48, pp. 223-233 (2012); arXiv:1206.2477; Bibcode:2012RMxAA..48..223A
574«Asterisms identification using astrometric data» Orellana, R. B. ; de Biasi, M. S.; IV Reunión sobre Astronomía Dinámica en Latino América (Eds. C. Allen, A. Ruelas, & R. Teixeira) Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 34, pp. 111-114 (2008); Bibcode:2008RMxAC..34..111O

Sky & Telescope

99Observer's Notebook: Twin Quasar Continues to Attract Observers; S&T 3/93, p.119
100The First Globular Cluster of the Season by Walter Scott Hudson; S&T 5/93, p.108
102The Man with the Snake by George Lovi; S&T 6/93, p.63
103Rediscovering the Color of the Crab Nebula by David Malin and Jay M. Pasachoff; S&T 7/93, p.43
104Summer's Grandest Globular Cluster by Walter Scott Houston; S&T 7/93, p.110
105A Star-Hop from Andromeda by Alan M. MacRobert; S&T 12/93, p.45
106Resolving a Quasar's Jet; S&T 3/94, p.12
107Rabbit Tracks by E. C. Krupp; S&T 6/94, p.64
108Ring Nebula Reality; S&T 7/94, p.15
109A Cepheus Star-Hop by Alan M. MacRobert; S&T 9/94, p.40
110The Veil Nebula by Roger N. Clark; S&T 10/94, p.104
111A Catalog of Quasars Near and Far by Geoffrey Burbidge and Adelaide Hewitt; S&T 12/94, p.32
112Images: NGC 4038/39 by David Malin; S&T 12/94, p.42
113Anatomy of a Crab by Wayne J. Parker; S&T 1/95, p.38
114Anatomy of a Cat's Eye; S&T 4/95, p.12
115Hubble Telescope Probes Shocks in Cygnus; S&T 5/95, p.11
116Young Star Clusters Found by HST in the 'Antennae'; S&T 6/95, p.12
117Andromeda's Brightest Globular Cluster by Leos Ondra; S&T 11/95, p.68
118X-raying the Crab; S&T 2/96, p.15
119Hubble Highlights the Helix Nebula's Knots; S&T 6/96, p.13
120Fingering the Crab; S&T 6/96, p.16
121Ripples in the Crab Nebula; S&T 8/96, p.10
122Our Neighbor's Brightest Globular; S&T 8/96, p.15
123M33's Puzzling Globulars; S&T 10/96, p.14
207Editor's choice: Abell 79 by Hal Heaton, June 12, 2018; skyandtelescope.org/online-gallery/abell-79 (2021-05-11)
501«Gauging Light Pollution: The Bortle Dark-Sky Scale» by John E. Bortle, Sky & Telescope, February 2001; skyandtelescope.org/astronomy-resources/light-pollution-and-astronomy-the-bortle-dark-sky-scale (2022-02-27)


128The Earth Centered Universe (ECU) von David J. Lane; Nova Astronomics; fox.nstn.ca/~ecu/edu.html
129TheSky for Windows, Version 2.11, Level IV; Software Bisque; 912 Twelfth Street; Suite A; Golden, Colorado 80401, USA; bisque.com/thesky
130Guide; Project Pluto, 168 Ridge Road, Bowdoinham ME 04008, USA; projectpluto.com
131XEphem Elwood Charles Downey; iraf.noao.edu/~ecdowney/xephem.html
149SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
227CDS Aladin Desktop; aladin.u-strasbg.fr/aladin.gml
265PP3 - Celestial Chart Generation, Torsten Bronger; pp3.sourceforge.net (2021-02-11)

Space Telescope Science Institute (STScI)

160The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
161Hubble Spies Globular Cluster in Neighbouring Galaxy; Press Release No. STScI-PRC96-11; oposite.stsci.edu/pubinfo/pr/96/11/A.html
162Planetary Nebula NGC 6543; Press Release No. STScI-PRC95-01; oposite.stsci.edu/pubinfo/pr/95/01.html
168Hubble peers into the Heart of the densest known Star Cluster; Press Release No. STScI-PRD95-06; oposite.stsci.edu/pubinfo/pr/95/06.html
169Cygnus Loop; Press Release No. STScI-PRC95-11; oposite.stsci.edu/pubinfo/pr/95/11.html
171Giant 'Twisters' and Star Wisps in the Lagoon Nebula; Press Release No. STScI-PR96-38; oposite.stsci.edu/pubinfo/pr/96/38.html
172Giant Starbirth Region In Neighboring Galaxy; Press Release No. STScI-PR96-27; oposite.stsci.edu/pubinfo/pr/96/27.html
173Gallery of Planetary Nebula Images; oposite.stsci.edu/pubinfo/pr/97/pn
174Embryonic Stars Emerge from Interstellar 'EGGs'; Press Release No. STScI-PR95-44; oposite.stsci.edu/pubinfo/pr/95/44.html
175Hubble Space Telescope Finds Stellar Graveyard; Press Release No. STScI-PR95-32; oposite.stsci.edu/pubinfo/pr/95/32.html
176Looking Down a Barrel of Gas at a Doomed Star; Press Release No. STScI-PR99-01; oposite.stsci.edu/pubinfo/pr/1999/01
177Hubble Legacy Archive; hla.stsci.edu (2021-01-02)

Sterne und Weltraum

124Quasar 3C 273 im Achtzöller von Michael Grosse; SuW 4/88, S.246
125Aktuelle Hinweise für den Beobachter; SuW 8-9/94, S.635
126Deep-Sky-Objekte des Monats: visuell beobachtet: NGC 6888 von Ronald C. Stoyan; SuW 7/96, S.555
127Bewegung im Krebsnebel; SuW 8-9/96, S.611

Students for the Exploration and Development of Space (SEDS)

132SEDS: The Interactive NGC Catalog Online; spider.seds.org/ngc/ngc.html
217The Messier Catalog (SEDS); messier.seds.org (2021-01-01)
269William Herschel's catalog of Deep Sky objects; messier.seds.org/xtra/similar/herschel.html (2021-12-27)

The Royal Society Publishing

463«Catalogue of one thousand new nebulae and clusters of stars» William Herschel, Philosophical Transactions of the Royal Society of London, 1 January 1786; DOI:10.1098/rstl.1786.0027
464«Catalogue of a second thousand of new nebulae and clusters of stars; with a few introductory remarks on the construction of the heavens» William Herschel, Philosophical Transactions of the Royal Society of London, 1 January 1789; DOI:10.1098/rstl.1789.0021
465«Catalogue of 500 new nebulae, nebulous stars, planetary nebula:, and clusters of stars; with remarks on the construction of the heavens» William Herschel, Philosophical Transactions of the Royal Society of London, 1 January 1802; DOI:10.1098/rstl.1802.0021
466«Observations of nebulæ and clusters of stars, made at Slough, with a twenty-feet reflector, between the years 1825 and 1833» John Frederick William Herschel, Philosophical Transactions of the Royal Society of London, 1 January 1833, Pages: 359-505; DOI:10.1098/rstl.1833.0021
467«Catalogue of nebulae and clusters of stars» John Frederick William Herschel, Philosophical Transactions of the Royal Society of London, 1 January 1864; DOI:10.1098/rstl.1864.0001
484«Observations on some of the nebulae» William Parsons; Philosophical Transactions of the Royal Society of London, Volume 134, published: 1 January 1844; DOI:10.1098/rstl.1844.0012
485«Observations on the Nebulae» William Parsons; Philosophical Transactions of the Royal Society of London, Volume 140, published 1 January 1850; DOI:10.1098/rstl.1850.0026
486«On the construction of specula of six-feet aperture; and a selection from the observations of nebulæ made with them» William Parsons; Philosophical Transactions of the Royal Society of London, Volume 151, published 1 January 1861; DOI:10.1098/rstl.1861.0029
487«Further observations upon the nebulae, with practical details relating to the construction of large telescopes» William Parsons; Proceedings of the Royal Society of London, Volume 11, published 1 January 1862; DOI:10.1098/rspl.1860.0078
488«An account of the observations on the great nebula in Orion, made at Birr Castle, with the 3-feet and 6-feet telescopes, between 1848 and 1867. With a drawing of the nebula» William Parsons; Philosophical Transactions of the Royal Society of London, Volume 158, published 1 January 1868; DOI:10.1098/rstl.1868.0004
528«Results of examination of southern nebulae with the spectroscope» John Herschel, Proceedings of the Royal Society of London, 1 January 1868; DOI:10.1098/rspl.1867.0101


258Arecibo message; en.wikipedia.org/wiki/Arecibo_message (2021-02-03)
268Theta Orionis; en.wikipedia.org/wiki/Theta_Orionis (2021-02-14)
299Sh2-155; en.wikipedia.org/wiki/Sh2-155 (2021-03-25)
363Wikipedia (deutsch): IC 2120; de.wikipedia.org/wiki/IC_2120 (2021-05-26)
364Wikipedia (français): IC 2120; fr.wikipedia.org/wiki/IC_2120 (2021-05-26)
453Walter Baade; en.wikipedia.org/wiki/Walter_Baade (2021-12-02)

WWW etc.

133Deepsky Atlas of the Hawaiian Astronomical Society; hawastsoc.org/deepsky
134Lyon-Meudon Extragalactic Database (LEDA); leda.univ-lyon1.fr
135Europas Uhr geht sechs Jahre nach von Barbara S. Eisenbeiss; MUSEION 2000, Glaube, Wissen, Kunst in Geschichte und Gegenwart; 6/94, S. 32
136Nord- und Südhimmel: Bootes, Star Observer 5/94, S.43
137Flags of the World (FOTW) Web Site; fotw.digibel.be/flags
138WEBDA, A site Devoted to Stellar Clusters in the Galaxy and the Magellanic Clouds; webda.physics.muni.cz
139Der Hippokratische Eid, deutsche Übersetzung und medizinhistorischer Kommentar, Prof. Dr. med Axel W. Bauer; uni-heidelberg.de/institute/fak5/igm/g47/bauerhip.htm
154Yale Bright Star Catalog, 15. Oktober 2020; tdc-www.harvard.edu/catalogs/bsc5.html
155Subaru Logo; 1000logos.net/subaru-logo (2023-01-08)
156Photographs from the Anglo-Australian Observatory; aao.gov.au/images.html
163Hubble's Hidden Treasuer - Image Processing; flickr.com/groups/hubblehiddentreasures_advanced/pool (2021-01-02)
164HST NGC 6309 by Judy Schmidt; flickr.com/photos/54209675@N00/10039678053 (2021-01-02)
165Flickr: Judy Schmidt; flickr.com/people/geckzilla (2021-01-02)
192Deep-Sky Guide; fernrohr.ch/1d_deep-sky-guide.html (2020-12-25)
193Beispiel Impressum für die Schweiz; 2sicgeeks.wordpress.com/2012/03/27/beispiel-impressum-fur-die-schweiz (2020-12-25)
196Celestial Atlas by Curtney Seligman; cseligman.com/text/atlas.htm (2020-12-28)
204Wolfram Alpha; wolframalpha.com (2020-12-29)
206Gamma Casiopeia, 1890. Roberts, Isaac; ssplprints.com/image/106813/roberts-isaac-gamma-casiopeia-1890 (2021-05-18)
212«Fossils of the distant Galaxy: NGC 5466 and its stellar stream» Jaclyn Jensen, University of Victoria, 2020; dspace.library.uvic.ca/handle/1828/12440 (2021-05-19)
235Astronomers Measure Mass of Supermassive Black Hole in NGC 1097; sci-news.com/astronomy/science-supermassive-black-hole-ngc1097-02928.html (2021-01-20)
248Crab Nebula (one decade time-lapse movie) by Detlef Hartmann; vimeo.com/253674871 (2021-01-24)
252EZgif; ezgif.com
267The Webb Deep-Sky Society; webbdeepsky.com (2021-02-13)
271«The Unexplored Nebula Project» Steve Mandel; aicccd.com/archive/aic2005/The_unexplored_nebula_project-smandel.pdf (2021-12-25)
274NGC 6822 von Wolfgang Steinicke; klima-luft.de/steinicke/Artikel/NGC6822.pdf (2021-02-17)
277«Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; klima-luft.de/steinicke (2021-02-17)
281«Catalogue Nébuleuses et des Amas D'Étoiles» Observées à Paris, par M. Messier, à l'Observatoire de la Marine, hôtel de Clugni, rue des Mathurins. «Connoissance des temps ou connoissance des mouvements célestes, pour l'année bissextile 1784 » Page 227; gallica.bnf.fr/ark:/12148/bpt6k6514280n/f235 (2021-02-21)
287Press Release (April 10, 2019): Astronomers Capture First Image of a Black Hole; eventhorizontelescope.org/press-release-april-10-2019-astronomers-capture-first-image-black-hole (2021-03-01)
296NGC 40: Astronomers Find New Evidence for the Violent Demise of Sun-Like Stars; chandra.harvard.edu/photo/2005/n40 (2021-03-21)
303List of Supernovae; cbat.eps.harvard.edu/lists/Supernovae.html (2021-04-08)
304All active supernova over mag 17.0; rochesterastronomy.org/supernova.html (2021-04-08)
325Planetary nebula Jones-Emberson 1; britastro.org/node/7191 (2021-05-04)
396«William Lassell's (1799-1880) telescopes and the discovery of Triton» Pedro Ré; astrosurf.com/re/william_lassell_telescopes.pdf (2021-06-25)
408«Runaway Stars as Possible Sources of the Elliptical Ring Structures in NGC 7538» Presenter: Josie Fenske (Physics – Oral Presentations) Faculty Mentor: Cassandra Fallscheer; youtu.be/BZKUPs-AYpE (2021-07-07)
441«The Ghost of a Dwarf Galaxy: Fossils of the Hierarchical Formation of the Nearby Spiral Galaxy NGC 5907»; cosmotography.com/images/small_ring_ngc5907.html (2021-10-05)
498Dark-Sky Switzerland Nachtkarten; darksky.ch/dss/de/aktivitaeten/nachtkarten (2022-02-26)
499Kostenlose Schweizerkarten mit Kantone und Seen zum Ausdrucken; vorla.ch/schweizerkarte (2022-02-26)
500Light Pollution Map; lightpollutionmap.info (2022-02-27)
502Dark Skies Awareness, Sky Brightness Nomogram; darkskiesawareness.org/nomogram.php (2022-02-27)
508Ou4: une découverte extraordinaire — Astronomie et CCD; outters.fr/wp/?page_id=1701 (2022-04-05)
551Picot 1, le couvre-chef impérial - Observation au télescope; stelvision.com/astro/fiche-observation/picot-1-le-couvre-chef-imperial (2022-10-10)
552«Deux nouveaux ANR» Fulbert Picot; Ciel Extrême, n°17, Avril 2000, p. 2; astrosurf.com/cielextreme/archives/CE17_read.pdf (2022-10-10)
561Saber Does The Stars; saberdoesthestars.wordpress.com/2011/07/05/saber-does-the-stars (2022-10-13)
571«Wer kennt Jürgen Stock?» von Florian Freistetter, 5. April 2011; scienceblogs.de/astrodicticum-simplex/2011/04/05/wer-kennt-jurgen-stock (2022-12-21)
576RASC Calgary Centre - Credits and Special Mentions; calgary.rasc.ca/credits.htm (2023-01-08)