The Carina Dwarf Spheroidal Galaxy is a dwarf galaxy in the Carina constellation. It was discovered in 1977 with the UK Schmidt Telescope by Cannon et al.[5][6] The Carina Dwarf Spheroidal galaxy is a satellite galaxy of the Milky Way and is receding from it at 230 km/s.[1] The diameter of the galaxy is about 1600 light-years, which is 75 times smaller than the Milky Way.[7] Most of the stars in the galaxy formed 7 billion years ago,[8] although it also experienced bursts of star formation about 13 and 3 billion years ago.[9] It is also being tidally disrupted by the Milky Way galaxy.[10]
| Carina Dwarf Spheroidal Galaxy | |
|---|---|
 Carina Dwarf Spheroidal Galaxy image made using observations from the Wide Field Imager on the MPG/ESO 2.2-metre telescope at La Silla, and from the Victor M. Blanco 4-metre telescope at the Cerro Tololo Inter-American Observatory. | |
| Observation data (J2000 epoch) | |
| Constellation | Carina |
| Right ascension | 06h 41m 36.7s[1] |
| Declination | −50° 57′ 58″[1] |
| Redshift | 230 ± 60 km/s[1] |
| Distance | 330 ± 30 kly (100 ± 10 kpc)[2][3] |
| Apparent magnitude (V) | 11.3B[1] |
| Characteristics | |
| Type | E3[1] |
| Mass | 1.51-1.69 × 106[4] M☉ |
| Apparent size (V) | 23.4′ × 15.5′[1] |
| Notable features | - |
| Other designations | |
| Carina Dwarf,[1] PGC 19441,[1] ESO 206-G20 | |
References
edit- ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for Carina Dwarf Spheroidal. Retrieved 2006-11-29.
- ^ I. D. Karachentsev; V. E. Karachentseva; W. K. Hutchmeier; D. I. Makarov (2004). "A Catalog of Neighboring Galaxies". Astronomical Journal. 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905.
- ^ Karachentsev, I. D.; Kashibadze, O. G. (2006). "Masses of the local group and of the M81 group estimated from distortions in the local velocity field". Astrophysics. 49 (1): 3–18. Bibcode:2006Ap.....49....3K. doi:10.1007/s10511-006-0002-6. S2CID 120973010.
- ^ F. A. Santana; R. R. Munoz; T. J. L. de Boer; J. D. Simon; M. Geha; P. Cote; A. E. Guzman; P. Stetson; S. G. Djorgovski (2016). "A MegaCam Survey of Outer Halo Satellites. VI. The Spatially Resolved Star-formation History of the Carina Dwarf Spheroidal Galaxy". Astrophysical Journal. 829 (2): 86. arXiv:1607.05312. Bibcode:2016ApJ...829...86S. doi:10.3847/0004-637X/829/2/86. S2CID 2809880.
- ^ Hartmut Frommert; Christine Kronberg. "Carina Dwarf". SEDS. Retrieved 2015-10-27.
- ^ R. D. Cannon; T. G. Hawarden; S. B. Tritton (1977). "A new Sculptor-type dwarf elliptical galaxy in Carina". Monthly Notices of the Royal Astronomical Society. 180: 81–82. Bibcode:1977MNRAS.180P..81C. doi:10.1093/mnras/180.1.81p.
- ^ Steve Phillipps (2004). "Small galaxies are growing smaller". Astronomy & Geophysics. 45 (6): 6.6-6.9. Bibcode:2004A&G....45f...6P. doi:10.1046/j.1468-4004.2003.45606.x.
- ^ The Satellite Galaxies
- ^ Hurley-Keller, Dennise; Mateo, Mario; Nemec, James (1998). "The Star Formation History of the Carina Dwarf Galaxy". The Astronomical Journal. 115 (5): 1840–1855. arXiv:astro-ph/9804058. Bibcode:1998AJ....115.1840H. doi:10.1086/300326. S2CID 6127647.
- ^ Kuhn, J. R.; Smith, Horace A.; Hawley, Suzanne L. (1996). "Tidal Disruption and Tails from the Carina Dwarf Spheroidal Galaxy". The Astrophysical Journal. 469 (2): L93–L96. Bibcode:1996ApJ...469L..93K. doi:10.1086/310270.
External links
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Media related to Carina Dwarf at Wikimedia Commons- Carina Dwarf at SEDS
- Observations of Tidal Disruption of the Carina Dwarf Spheroidal Galaxy
- The Carina Dwarf on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
