Cetus Dwarf is a dwarf spheroidal galaxy. It lies approximately 2.46 Million light-years from Earth. It is an isolated galaxy of the Local Group, which also contains the Milky Way.[3] All of the most readily observable stars in the galaxy are red giants.[4]
| Cetus Dwarf | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 00h 26m 11.0s[1] |
| Declination | −11° 02′ 40″[1] |
| Distance | 2.46 ± 0.08 Mly (755 ± 24 kpc)[2] |
| Apparent magnitude (V) | 14.4[1] |
| Characteristics | |
| Type | dSph[1] |
| Other designations | |
| PGC 3097691[1] | |
History
editThe Cetus Dwarf was discovered in 1999 by Alan B. Whiting, George Hau and Mike Irwin and was found to be a member of the Local Group.[2][5]
Characteristics
editAs of 2000, no known neutral hydrogen gas has been found that is related to the Cetus dwarf galaxy.[5]
References
edit- ^ a b c d e f "NASA/IPAC Extragalactic Database". Results for Cetus Dwarf. Retrieved 2006-12-23.
- ^ a b McConnachie, A. W.; Irwin, M. J.; Ferguson, A. M. N.; Ibata, R. A.; Lewis, G. F.; Tanvir, N. (2005). "Distances and metallicities for 17 Local Group galaxies". Monthly Notices of the Royal Astronomical Society. 356 (4): 979–997. arXiv:astro-ph/0410489. Bibcode:2005MNRAS.356..979M. doi:10.1111/j.1365-2966.2004.08514.x.
- ^ Alan B. Whiting; George Hau; Mike Irwin (31 August 1999). "A New Local Group Galaxy in Cetus". The Astronomical Journal. 118 (6): 2767–2774. Bibcode:1999AJ....118.2767W. doi:10.1086/301142.
- ^ Hartmut Frommert. "Cetus Dwarf". SEDS.
- ^ a b van den Bergh, Sidney (April 2000). "Updated Information on the Local Group". The Publications of the Astronomical Society of the Pacific. 112 (770): 529–536. arXiv:astro-ph/0001040. Bibcode:2000PASP..112..529V. doi:10.1086/316548. S2CID 1805423.
External links
edit- The Cetus Dwarf on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images