Cluster NGC 1893 + Nebula IC 410

Object Description

NGC 1893 + IC 410
NGC 1893 + IC 410: Cluster with nebulosity in Auriga; 500 mm Cassegrain 3625 mm f/7.2, SBIG STL11K; 370+3*80 min LRGB; Bernese Highlands; © 2015 Radek Chromik

On January 22nd, 1827, John Herschel discovered the open star cluster JH 351 (GC 1101) of about 7.5 magnitudes and 10 arc minutes in diameter. Dreyer included it in his «New General Catalogue of Nebulae and Clusters of Stars» published in 1888 as NGC 1893 and added the description: «Cluster, large, rich in stars, little condensed". On September 25, 1892, the German astronomer Max Wolf aimed his telescope at that star cluster and noticed a nebula that Herschel had apparently not seen. The nebula was included as IC 410 in Dreyer's first «Index Catalog of Nebulae found in the Years 1888 to 1894» published in 1895. [196, 313, 314]

IC 405, IC 410, IC 417
IC 405, IC 410, IC 417: H-II Region in Auriga. STScI Digitized Sky Survey [147]

NGC 1893 is a young star cluster, estimated to be one to two million years old. It is in a different spiral arm than the sun. At a distance of around 11 kpc (around 36'000 light years) from the center of the Milky Way, it lies on the outer edge of the Milky Way. The cluster lies in the Auriga OB2 association and is connected to the H-II region IC 410 (LBN 807, Sh2-236), which also includes the smaller nebulae Sim 129 and Sim 130, as well as dark molecular clouds. There are five O-type stars in the cluster, which are primarily responsible for the glow of the nebula. New stars are still forming in the nebula. [319, 320]

As can be seen in fig. 2, IC 410 seems to belong to a larger H-II complex W8. At Simbad one finds measured distances of the star cluster NGC 1893 to Earth of 2.9 kpc to 3.7 kpc (about 9500 to 12'000 light years), which is much further away than the measured distance of 1500 light years from AE Aurigae in the Flaming Star Nebula (IC 405). [145]

«Revised New General Catalogue and Index Catalogue», «Historically Corrected New General Catalogue», Dr. Wolfgang Steinicke, 2021 [277]
NameRADecTypeBmagVmagDimDreyer DescriptionIdentification
NGC 1893 05 22 45.6+33 24 52OCL (II2mn)7.510.00Cl, L, Ri, lCOCL 439, in IC 410, LBN 807
IC 410 05 22 45.0+33 24 48EN+OCL55.00 × 45.0Dif, many st invLBN 807, OCL 439, around NGC1893

Finder Chart

IC 410 is located in the southern part of the Auriga pentagon. The best observation time is September to April.

Chart IC 410
Chart created using SkySafari 6 Pro and STScI Digitized Sky Survey. [149, 160]

References

145SIMBAD astronomical database; simbad.u-strasbg.fr/simbad
147Aladin Lite; aladin.u-strasbg.fr/AladinLite (2020-12-23)
149SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
160The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
196Celestial Atlas by Curtney Seligman; cseligman.com/text/atlas.htm (2020-12-28)
277«Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; klima-luft.de/steinicke (2021-02-17)
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
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
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
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