Bubble Nebula (NGC 6822)

Short description: Nebula in Barnard's Galaxy in the constellation Sagittarius

Bubble Nebula in Barnard's GalaxyEmission nebula

H II region

The Bubble Nebula (upper left) seen with the Ring Nebula (lower right)

Observation data: J2000 epoch
Right ascension|  19h 44m 31.8s[1]
Declination| −14° 41′ 57″[1]
Distance| 1.63 ± 0.03 Mly (500 ± 10 kpc)[2][3][4] ly
Apparent magnitude (V)| 15[1]
Apparent dimensions (V)| 48″ × 32″
Constellation| Sagittarius
Physical characteristics
Radius| ~379 ly (116.3 pc) (estimated)[2][3][4] ly
Designations| Hubble 1925 I, Hubble I,[1]

MCG -02-50-002,[1]

IRAS 19417-1449,[1] Hodge 2, PGC 63596
See also: Lists of nebulae

The Bubble Nebula in Barnard's Galaxy has the official designation of Hubble 1925 I as it was the first (Roman numeral 1) object recorded in a paper by Hubble 1925. It includes areas of bright H II[1] emission. It is located north-west of the larger Hubble 1925 III.

## Contents

* 1 See also
* 2 Notes
* 3 References
* 4 External links

## See also

* Ring Nebula (NGC 6822)

## Notes

1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 NED 2007
2. ↑ 2.0 2.1 Karachentsev et al. 2004
3. ↑ 3.0 3.1 Karachentsev & Kashibadze 2006
4. ↑ 4.0 4.1 Cannon et al. 2006

## References

* Cannon, John M.; Walter, Fabian; Armus, Lee; Bendo, George J.; Calzetti; Draine, Bruce T.; Engelbracht, Charles W.; Helou, George et al. (December 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
* Hubble, Edwin P. (December 1925), "NGC 6822, a remote stellar system", Astrophysical Journal 62: 409–433, doi:10.1086/142943, Bibcode: 1925ApJ....62..409H
* Karachentsev, I. D.; Karachentseva, V. E.; Hutchmeier, W. K.; Makarov, D. I. (April 2004), "A Catalog of Neighboring Galaxies", Astronomical Journal 127 (4): 2031–2068, doi:10.1086/382905, Bibcode: 2004AJ....127.2031K
* Karachentsev, I. D.; Kashibadze, O. G. (January 2006), "Masses of the local group and of the M81 group estimated from distortions in the local velocity field", Astrophysics 49 (1): 3–18, doi:10.1007/s10511-006-0002-6, Bibcode: 2006Ap.....49....3K
* NED (February 24, 2007), Results for search on MCG -02-50-002, http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=MCG+-02-50-002

## External links

*   * NGC 6822 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Coordinates:  19h 44m 31.8s, −14° 41′ 57″

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