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Coordinates: Sky map 01h 51m 06.3s, −44° 26′ 41″
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{{Short description|Galaxy in the constellation of Phoenix}}
{{Infobox Galaxy
{{Infobox Galaxy
| image = [[Image:Phoenix Dwarf Hubble WikiSky.jpg|300px]]
| image = An explosive phoenix - Phoenix Dwarf.jpg
| image_size = 300px
| caption= Phoenix Dwarf by the [[Hubble Space Telescope]]
| caption= Phoenix Dwarf by the [[Very Large Telescope]]<ref>{{cite web |title=An explosive phoenix |url=https://www.eso.org/public/images/potw1838a/ |website=www.eso.org |access-date=17 September 2018}}</ref>
| name = Phoenix Dwarf Galaxy
| name = Phoenix Dwarf Galaxy
| epoch = [[Epoch (astronomy)#Julian years and J2000|J2000]]
| epoch = [[Epoch (astronomy)#Julian years and J2000|J2000]]
| type = IAm<ref name="ned">{{cite web
| type = IAm<ref name="ned">{{cite web
| title=NASA/IPAC Extragalactic Database
| title=NASA/IPAC Extragalactic Database
| work=Results for Phoenix Dwarf
| work=Results for Phoenix Dwarf
| url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=Phoenix+Dwarf#ObjNo1
| url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=Phoenix+Dwarf#ObjNo1
| accessdate=2007-03-15 }}</ref>
| access-date=2007-03-15 }}</ref>
| ra = {{RA|01|51|06.3}}<ref name="ned" />
| ra = {{RA|01|51|06.3}}<ref name="ned"/>
| dec = {{DEC|-44|26|41}}<ref name="ned" />
| dec = {{DEC|-44|26|41}}<ref name="ned"/>
| dist_ly = 1.44 ± 0.07 [[light-year|Mly]] (440 ± 20 [[parsec|kpc]])<ref name="karachentsevetal2004">{{cite journal
| dist_ly = 1.44 ± 0.07 [[light-year|Mly]] (440 ± 20 [[parsec|kpc]])<ref name="karachentsevetal2004">{{cite journal
|author1=I. D. Karachentsev |author2=V. E. Karachentseva |author3=W. K. Hutchmeier |author4=D. I. Makarov | title=A Catalog of Neighboring Galaxies
|author1=I. D. Karachentsev |author2=V. E. Karachentseva |author3=W. K. Hutchmeier |author4=D. I. Makarov | title=A Catalog of Neighboring Galaxies
| journal=Astronomical Journal
| journal=Astronomical Journal
| date=2004
| date=2004
| volume=127
| volume=127
| issue=4
| issue=4
| pages=2031–2068
| pages=2031–2068
| bibcode=2004AJ....127.2031K
| bibcode=2004AJ....127.2031K
| doi=10.1086/382905}}</ref><ref name="Karachentsevetal2006">{{cite journal
| doi=10.1086/382905| doi-access=free
}}</ref><ref name="Karachentsevetal2006">{{cite journal
| author=Karachentsev, I. D.
| author=Karachentsev, I. D.
| author2=Kashibadze, O. G.
| author2=Kashibadze, O. G.
| title=Masses of the local group and of the M81 group estimated from distortions in the local velocity field
| title=Masses of the local group and of the M81 group estimated from distortions in the local velocity field
| journal=Astrophysics
| journal=Astrophysics
| date=2006
| date=2006
| volume=49
| volume=49
| issue=1
| issue=1
| pages=3–18
| pages=3–18
| bibcode=2006Ap.....49....3K
| bibcode=2006Ap.....49....3K
| doi=10.1007/s10511-006-0002-6 }}</ref>
| doi=10.1007/s10511-006-0002-6 | s2cid=120973010
}}</ref>
| z = 60 ± 30 km/[[second|s]]<ref name="ned" />
| z = 60 ± 30 km/[[second|s]]<ref name="ned"/>
| appmag_v = 13.1<ref name="ned" />
| appmag_v = 13.1<ref name="ned"/>
| size_v = 4′.9 × 4′.1<ref name="ned" />
| size_v = 4′.9 × 4′.1<ref name="ned"/>
| constellation name = [[Phoenix (constellation)|Phoenix]]
| constellation name = [[Phoenix (constellation)|Phoenix]]
| notes = -
| notes = -
| names = ESO 245- G 007,<ref name="ned" /> [[Principal Galaxies Catalogue|PGC]] 6830<ref name="ned" />
| names = ESO 245- G 007,<ref name="ned"/> [[Principal Galaxies Catalogue|PGC]] 6830<ref name="ned"/>
}}
}}


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| pages = 129–131
| pages = 129–131
| date = May 1976
| date = May 1976
⚫
}}</ref><ref name="Canternaetal1977">{{Cite journal
| postscript = <!--None-->
⚫
}}</ref><ref name="Canternaetal1977">{{Cite journal
| last1 = Canterna
| last1 = Canterna
| first1 = R.
| first1 = R.
Line 63: Line 66:
| pages = L57–L58
| pages = L57–L58
| doi = 10.1086/182374
| doi = 10.1086/182374
}}</ref> It is currently 1.44&nbsp;[[Light-year|Mly]] away from [[Earth]]. Its name comes from the fact that it is part of the [[Phoenix constellation]].
| postscript = <!--None-->
}}</ref> In the Catalogue of Named Galaxies, it is called '''Nivalis Phoenicis''', or the ''snowy'' galaxy.<ref>{{cite web|last1=Bodifee|first1=Gerard|title=Catalogue of One Thousand Named Galaxies|url=http://www.bodifee.be/wp-content/uploads/2015/08/2_CMG.pdf|accessdate=21 May 2017}}</ref> It is currently 1.44&nbsp;[[Light-year|Mly]] away from [[Earth]]. Its name comes from the fact that it is part of the [[Phoenix constellation]].


== Characteristics ==
== Characteristics ==
The Phoenix Dwarf has an inner part of young [[star]]s 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|H&nbsp;I]] region of about 10<sup>5</sup> {{Solar mass|link=y}} just to the west of Phoenix. Its [[radial velocity]] 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 [[star]]s 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<sup>5</sup> {{Solar mass|link=y}} just to the west of Phoenix. Its [[radial velocity]] 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
| first1 = Sidney
| first1 = Sidney
| authorlink1 = Sidney van den Bergh
| author-link1 = Sidney van den Bergh
| title = Updated Information on the Local Group
| title = Updated Information on the Local Group
| date = April 2000
| date = April 2000
Line 79: Line 81:
| pages = 529–536
| pages = 529–536
| doi = 10.1086/316548
| doi = 10.1086/316548
|arxiv = astro-ph/0001040 | s2cid = 1805423
| postscript = <!--None-->
|arxiv = astro-ph/0001040 }}</ref>
}}</ref>


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


{{Milky Way}}


⚫
{{Sky|01|51|06.3|-|44|26|41|1440000}}

{{Milky Way}}{{Phoenix (constellation)}}
[[Category:Irregular galaxies]]
[[Category:Irregular galaxies]]
[[Category:Dwarf irregular galaxies]]
[[Category:Dwarf irregular galaxies]]

Latest revision as of 00:40, 16 June 2023

Phoenix Dwarf Galaxy
Phoenix Dwarf by the Very Large Telescope[1]
Observation data (J2000 epoch)
ConstellationPhoenix
Right ascension01h 51m 06.3s[2]
Declination−44° 26′ 41″[2]
Redshift60 ± 30 km/s[2]
Distance1.44 ± 0.07 Mly (440 ± 20 kpc)[3][4]
Apparent magnitude (V)13.1[2]
Characteristics
TypeIAm[2]
Apparent size (V)4′.9 × 4′.1[2]
Notable features-
Other designations
ESO 245- G 007,[2] PGC 6830[2]

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.[5][6] It is currently 1.44 Mly away from Earth. Its name comes from the fact that it is part of the Phoenix constellation.

Characteristics

[edit]

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 105 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.[7]

References

[edit]
  1. ^ "An explosive phoenix". www.eso.org. Retrieved 17 September 2018.
  2. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for Phoenix Dwarf. Retrieved 2007-03-15.
  3. ^ 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.
  4. ^ 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.
  5. ^ Schuster, H.-E.; West, R. M. (May 1976). "A very distant globular cluster?". Astronomy & Astrophysics. 49: 129–131. Bibcode:1976A&A....49..129S.
  6. ^ 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.
  7. ^ 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.
[edit]



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