Planetary Nebula Ethos 1
History
The planetary nebula Ethos 1 (PN G068.1+11.0) was discovered in 2009 by Miszalski et al. Discovered in the «SuperCOSMOS Science Archive» data during the design phase of the «Extremely Turquoise Halo Object Survey» (ETHOS). In this investigation, a spectroscopic search was carried out specifically for planetary nebulae outside the Milky Way plane, which were overlooked during a visual inspection.
Physical Properties
Ethos 1 is noticeable as one of the few planetary nebulae that both bipolar jets travel at speeds of 120±10 km/s, as well as having a tight binary central star. The observed light curve shows an orbital time of only 0.535 days with a very strong amplitude of 0.816 mag, due to the overexposure by a very hot pre-white dwarf star. Ethos 1 underpins the long suspected connection between binary central stars and jets. The kinematic age of the jets is estimated to be 1750±250 yr/kpc, which is higher than the inner nebula of 900±100 yr/kpc. [401]
| Designations | Ethos 1, PN G068.1+11.0 |
| RA (ICRS) | 19h 16m 31.5s |
| Dec (ICRS) | +36° 09' 47.7" |
Finder Chart
The planetary nebula Ethos 1 is located in the constellation Lyra. The best observation time is April to October.
Visual Observation
Description pending ...