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Revision as of 15:36, 9 June 2012 by BD2412 (talk | contribs) (minor fixes, mostly disambig links using AWB)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)| Phoenix Dwarf | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Phoenix |
| Right ascension | 01 51 06.3 |
| Declination | −44° 26′ 41″ |
| Redshift | 60 ± 30 km/s |
| Distance | 1.44 ± 0.07 Mly (440 ± 20 kpc) |
| Apparent magnitude (V) | 13.1 |
| Characteristics | |
| Type | IAm |
| Apparent size (V) | 4′.9 × 4′.1 |
| Notable features | - |
| Other designations | |
| ESO 245- G 007, PGC 6830 | |
The Phoenix Dwarf is a dwarf galaxy and an irregular galaxy that was discovered in 1976 by Hans-Emil Schuster and Richard Martin West and mistaken for a globular cluster. It is currently 1.44 Mly away from Earth. Its name comes from the fact that it is part of the Phoenix constellation.
Characteristics
The Phoenix dwarf has an inner part of young stars running in an east-west direction and an outer part of mainly old stars that runs north-south. The central region's rate of star formation seems to have been relatively constant across time (Martínez-Delgado et al. 1999). In 1999, St-Germain et al. discovered a H I region of about 10 M☉ just to the west of Phoenix. Its radial velocity is -23 km/s and may be physically associated with Phoenix if it is found to have a similar radial velocity.
References
- ^ "NASA/IPAC Extragalactic Database". Results for Phoenix Dwarf. Retrieved 2007-03-15.
- 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.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - 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.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - Schuster, H.-E.; West, R. M. (05/1976). "A very distant globular cluster?". Astronomy & Astrophysics. 49: 129–131. Bibcode:1976A&A....49..129S.
{{cite journal}}: Check date values in:|date=(help) - Canterna, R.; Flower, P. J. (March 1977). "A new dwarf irregular galaxy in the constellation Phoenix". Astrophysical Journal. 212 (Letters): L57–L58. Bibcode:1977ApJ...212L..57C. doi:10.1086/182374.
- 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.
External links
- The Phoenix Dwarf on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images