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Coordinates: Sky map 00h 26m 11s, −11° 02′ 40″
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{{Short description|Galaxy in the constellation Cetus}}
{{Infobox Galaxy
{{Infobox Galaxy
| name = Cetus Dwarf
| name = Cetus Dwarf
| image = Cetus Dwarf Galaxy color cutout hst 10505 31 acs wfc f814w f475w sci.jpg
| image =<!-- Deleted image removed: [[Image:Cetus Dwarf DSS2.jpg|280px]] -->
| epoch = [[J2000]]
| epoch = [[Epoch (astronomy)#Julian years and J2000|J2000]]
| type = dSph<ref name="ned">{{cite web
| type = dSph<ref name="ned">{{cite web
| title=NASA/IPAC Extragalactic Database
| title=NASA/IPAC Extragalactic Database
| work=Results for Cetus Dwarf
| work=Results for Cetus Dwarf
| url=http://nedwww.ipac.caltech.edu/
| url=http://nedwww.ipac.caltech.edu/
| accessdate=2006-12-23 }}</ref>
| access-date=2006-12-23 }}</ref>
| ra = {{RA|00|26|11.0}}<ref name="ned" />
| ra = {{RA|00|26|11.0}}<ref name="ned" />
| dec = {{DEC|-11|02|40}}<ref name="ned" />
| dec = {{DEC|-11|02|40}}<ref name="ned" />
Line 13: Line 14:
| z =
| z =
| appmag_v = 14.4<ref name="ned" />
| appmag_v = 14.4<ref name="ned" />
| size_v = 5&prime;.0 &times; 4&prime;.3<ref name="ned" />
| size_v 5.0{{prime}} × 4.3{{prime}}<ref name="ned" />
| constellation name = [[Cetus]]
| constellation name = [[Cetus]]
| names = [[Principal Galaxies Catalogue|PGC]] 3097691<ref name="ned" />
| names = [[Principal Galaxies Catalogue|PGC]] 3097691<ref name="ned" />
}}
}}


'''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]]. All of the most readily observable stars in the galaxy are [[red giant]]s.[http://www.seds.org/~spider/spider/LG/cet_dw.html]
'''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]].<ref>{{cite journal |author1=Alan B. Whiting |author2=George Hau |author3=Mike Irwin |title=A New Local Group Galaxy in Cetus |journal=The Astronomical Journal |volume=118 |issue=6 |pages=2767–2774 |date=31 August 1999 |bibcode=1999AJ....118.2767W |doi = 10.1086/301142 |doi-access=free }}</ref> All of the most readily observable stars in the galaxy are [[red giant]]s.<ref>
{{cite web |author=Hartmut Frommert |title=Cetus Dwarf |url=http://spider.seds.org/spider/LG/cet_dw.html |publisher=[[SEDS]] }}</ref>


==History==
==History==
Cetus dwarf was discovered in 1999 by [[Alan Whiting]], [[George Hau]] and [[Mike Irwin]] and was found to be a member of the [[Local Group]].<ref name="McConnachieetal2005">{{cite journal
The 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]].<ref name="McConnachieetal2005">{{cite journal
| author=McConnachie, A. W.; Irwin, M. J.; Ferguson, A. M. N.; Ibata, R. A.; Lewis, G. F.; Tanvir, N.
|author1=McConnachie, A. W. |author2=Irwin, M. J. |author3=Ferguson, A. M. N. |author4=Ibata, R. A. |author5=Lewis, G. F. |author6=Tanvir, N. | title=Distances and metallicities for 17 Local Group galaxies
⚫
| journal=[[Monthly Notices of the Royal Astronomical Society]]
| title=Distances and metallicities for 17 Local Group galaxies
⚫
| journal=Monthly Notices of the Royal Astronomical Society
| year=2005
| year=2005
| volume=356
| volume=356
| issue=4
| issue=4
| pages=979–997
| pages=979–997
| url=http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2005MNRAS.356..979M
| bibcode=2005MNRAS.356..979M
| doi=10.1111/j.1365-2966.2004.08514.x }}</ref><ref name="Bergh2000">{{ Cite journal
| doi=10.1111/j.1365-2966.2004.08514.x |doi-access=free |arxiv = astro-ph/0410489 }}</ref><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
| year = 2000
| date = April 2000
| date = April 2000
| journal = The Publications of the Astronomical Society of the Pacific
| journal = The Publications of the Astronomical Society of the Pacific
| volume = 112
| volume = 112
| issue = 770
| issue = 770
| page = 529–536
| pages = 529–536
| url = http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2000PASP..112..529V
| bibcode = 2000PASP..112..529V
| doi = 10.1086/316548
| doi = 10.1086/316548
|arxiv = astro-ph/0001040 | s2cid = 1805423
}}</ref>
}}</ref>


==Characteristics==
==Characteristics==
As of 2000, no known [[neutral hydrogen]] gas has been found that is related to Cetus dwarf.<ref name="Bergh2000" />
As of 2000, no known [[neutral hydrogen]] gas has been found that is related to the Cetus dwarf galaxy.<ref name="Bergh2000" />


== References ==
== References ==
Line 53: Line 54:
==External links==
==External links==
*{{WikiSky|name=The Cetus Dwarf}}
*{{WikiSky|name=The Cetus Dwarf}}


{{Cetus|state=collapsed}}
{{Sky|00|26|11|-|11|02|40|2460000}}
{{Sky|00|26|11|-|11|02|40|2460000}}

⚫
{{DEFAULTSORT:Cetus Dwarf}}
[[Category:Dwarf spheroidal galaxies]]
[[Category:Dwarf spheroidal galaxies]]
[[Category:Local Group]]
[[Category:Local Group]]
[[Category:Cetus constellation]]
[[Category:Cetus]]
[[Category:PGC objects|3097691]]
[[Category:Principal Galaxies Catalogue objects|3097691]]
[[Category:Astronomical objects discovered in 1999]]

{{galaxy-stub}}

⚫
[[de:Cetus Dwarf]]
[[fr:Poissons (galaxie naine)]]
[[pt:Galáxia Anã de Cetus]]
[[sk:Cetus Dwarf]]
[[zh:鯨魚座矮星系]]

Latest revision as of 22:43, 22 August 2024

Cetus Dwarf
Observation data (J2000 epoch)
ConstellationCetus
Right ascension00h 26m 11.0s[1]
Declination−11° 02′ 40″[1]
Distance2.46 ± 0.08 Mly (755 ± 24 kpc)[2]
Apparent magnitude (V)14.4[1]
Characteristics
TypdSph[1]
Other designations
PGC 3097691[1]

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]

History

[edit]

The 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

[edit]

As of 2000, no known neutral hydrogen gas has been found that is related to the Cetus dwarf galaxy.[5]

References

[edit]
  1. ^ a b c d e f "NASA/IPAC Extragalactic Database". Results for Cetus Dwarf. Retrieved 2006-12-23.
  2. ^ 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.
  3. ^ 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.
  4. ^ Hartmut Frommert. "Cetus Dwarf". SEDS.
  5. ^ 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.
[edit]


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