Bubble nebula (NGC 6822)

Observational Data
Designation |  Hubble 1925 I
Right ascension |  19h 44m 31.8s[1]
Declination |  -14° 41′ 57″[1]
Constellation |  Sagittarius
Type of object |  Emission nebula
Astrometry
Distance from Earth |  1.6 million ly[2]

The Bubble nebula in Barnard's galaxy (Hubble 1925 I) is an emission nebula situated in Barnard's galaxy (NGC 6822). Barnard's galaxy is a barred irregular galaxy and known for containing over 150 large HII regions, an unusually high number.[2] The nebula was first observed by Edwin Hubble in 1925. The nebula's name derived from its bubble like shape, but it should not be confused with NGC 7635 which is also called the Bubble nebula.

## References[edit]

1. ↑ 1.0 1.1 Cannon, J. M.; Walter, F.; Armus, L. et al. (2006). "The Nature of Infrared Emission in the Local Group Dwarf Galaxy NGC 6822 as Revealed by Spitzer". The Astrophysical Journal 652 (2): 1170–1187. doi:10.1086/508341. Bibcode: 2006ApJ...652.1170C. arXiv:astro-ph/0608249
2. ↑ 2.0 2.1 Barnard’s Galaxy (NGC 6822). annesastronomynews.com. Retrieved on 2019-09-15.

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Nebula

Diffuse nebulae|

Barnard's loop · Bubble nebula · Bubble nebula in Barnard's galaxy · California nebula · Cave nebula · Corona Australis nebula · Cone Nebula · Crescent nebula · Double Helix nebula · Eagle nebula · Elephant's Trunk nebula · Eta Carinae nebula · Flame nebula · Gum nebula · Heart nebula · Lagoon nebula · North America Nebula · Omega nebula · Orion nebula · Pistol nebula · Rosette nebula · Soul nebula · Tarantula nebula · Trifid nebula · Witch head nebula

Planetary nebulae|

Bug nebula · Butterfly nebula · Cat's eye nebula · Dumbbell nebula · Eight-burst nebula · Eskimo nebula · Footprint nebula · Ghost of Jupiter · Helix nebula · Hourglass nebula · Little dumbbell nebula · Little ghost nebula · Medusa nebula · NGC 2346 · NGC 2438 · Owl nebula · Red spider nebula · Retina nebula · Ring nebula · Saturn nebula · Spiral planetary nebula · Spirograph nebula · Stingray nebula · Thor's helmet

Protoplanetary nebulae|

Boomerang nebula · Calabash nebula · Egg nebula · Frosty Leo nebula · Red rectangle nebula · Cotton candy nebula · Water lily nebula

Dark nebulae|

Coalsack nebula · Dark horse nebula · E nebula · Horsehead nebula · Pipe nebula · Snake nebula

Herbig–Haro objects|

HH32 · HH47

Supernova remnants|

Cassiopeia A · Crab nebula · Sagittarius A East · Veil nebula · Vela supernova · SN G1.9+0.3 · SN 1572 · SN 1604