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| caption = | caption =
| name = Phoenix Dwarf | name = Phoenix Dwarf
| epoch = ] | epoch = ]
| type = IAm<ref name="ned">{{cite web | type = IAm<ref name="ned">{{cite web
| title=NASA/IPAC Extragalactic Database | title=NASA/IPAC Extragalactic Database
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}} }}


The '''Phoenix Dwarf''' is a ] and an ] that was discovered in 1976 by ] and ] and mistaken for a ].<ref name="schusteretal1976">{{Cite journal The '''Phoenix Dwarf''' is a ] discovered in 1976 by ] and ] and mistaken for a ].<ref name="schusteretal1976">{{Cite journal
| last1 = Schuster | last1 = Schuster
| first1 = H.-E. | first1 = H.-E.
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| doi = 10.1086/182374 | doi = 10.1086/182374
| postscript = <!--None--> | postscript = <!--None-->
}}</ref> It is currently 1.44&nbsp;] away from ]. Its name comes from the fact that it is part of the ]. }}</ref> It is currently 1.44&nbsp;] away from ]. Its name comes from the fact that it is part of the ].


== Characteristics == ==Characteristics==
The Phoenix dwarf has an inner part of young stars which is stretched in an east-west direction and an outer part of mainly old stars that is stretched north-south. The central region's rate of ] seems to have been relatively constant across time (Martínez-Delgado et al. 1999). In 1999, St-Germain et al. discovered a ] region of about 10<sup>5</sup> {{Solar mass|link=y}} just to the west of Phoenix. Its ] is -23&nbsp;km/s and may be physically associated with Phoenix if it is found to have a similar radial velocity.<ref name="Bergh2000">{{ Cite journal The Phoenix dwarf has an inner part of young stars which is stretched in an east-west direction and an outer part of mainly old stars that is stretched north-south. The central region's rate of ] seems to have been relatively constant across time (Martínez-Delgado et al. 1999). In 1999, St-Germain et al. discovered a ] region of about 10<sup>5</sup> {{Solar mass|link=y}} just to the west of Phoenix. Its ] is -23&nbsp;km/s and may be physically associated with Phoenix if it is found to have a similar radial velocity.<ref name="Bergh2000">{{ Cite journal
| last1 = van den Bergh | last1 = van den Bergh
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]]] ]]]


== References == ==References==
{{reflist}} {{reflist}}


== External links == ==External links==
* {{WikiSky|name=The Phoenix Dwarf}} * {{WikiSky|name=The Phoenix Dwarf}}
{{Sky|01|51|06.3|-|44|26|41|1440000}} {{Sky|01|51|06.3|-|44|26|41|1440000}}

Revision as of 04:45, 6 July 2015

Phoenix Dwarf
Observation data (J2000 epoch)
ConstellationPhoenix
Right ascension01 51 06.3
Declination−44° 26′ 41″
Redshift60 ± 30 km/s
Distance1.44 ± 0.07 Mly (440 ± 20 kpc)
Apparent magnitude (V)13.1
Characteristics
TypeIAm
Apparent size (V)4′.9 × 4′.1
Notable features-
Other designations
ESO 245- G 007, PGC 6830

The Phoenix Dwarf is a dwarf irregular galaxy 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 which is stretched in an east-west direction and an outer part of mainly old stars that is stretched 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.

Phoenix Dwarf by HST

References

  1. ^ "NASA/IPAC Extragalactic Database". Results for Phoenix Dwarf. Retrieved 2007-03-15.
  2. 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)
  3. 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.
  4. Schuster, H.-E.; West, R. M. (May 1976). "A very distant globular cluster?". Astronomy & Astrophysics. 49: 129–131. Bibcode:1976A&A....49..129S.
  5. 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.
  6. 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

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