Carina Dwarf Spheroidal Galaxy

Short description: Dwarf galaxy in the constellation Carina

Carina Dwarf Spheroidal Galaxy

Carina Dwarf Spheroidal Galaxy image made using observations from the Wide Field Imager on the MPG/ESO 2.2-metre telescope at La Silla, and from the Victor M. Blanco 4-metre telescope at the Cerro Tololo Inter-American Observatory.

Observation data (J2000 epoch)
Constellation| Carina
Right ascension|  06h 41m 36.7s[1]
Declination| −50° 57′ 58″[1]
Redshift| 230 ± 60 km/s[1]
Distance| 330 ± 30 kly (100 ± 10 kpc)[2][3]
Apparent magnitude (V)| 11.3B[1]
Characteristics
Type| E3[1]
Mass| 1.51-1.69 × 106[4] M☉
Apparent size (V)| 23.4′ × 15.5′[1]
Notable features| -
Other designations
Carina Dwarf,[1] PGC 19441,[1] ESO 206-G20
The location of the Carina Dwarf Spheriodal Galaxy (circled in red)

The Carina Dwarf Spheroidal Galaxy is a dwarf galaxy in the Carina constellation. It was discovered in 1977 with the UK Schmidt Telescope by Cannon et al.[5][6] The Carina Dwarf Spheroidal galaxy is a satellite galaxy of the Milky Way and is receding from it at 230 km/s.[1] The diameter of the galaxy is about 1600 light-years, which is 75 times smaller than the Milky Way.[7] Most of the stars in the galaxy formed 7 billion years ago,[8] although it also experienced bursts of star formation about 13 and 3 billion years ago.[9] It is also being tidally disrupted by the Milky Way galaxy.[10]

## References

1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "NASA/IPAC Extragalactic Database". Results for Carina Dwarf Spheroidal. http://nedwww.ipac.caltech.edu/.
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. doi:10.1086/382905. Bibcode: 2004AJ....127.2031K.
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. doi:10.1007/s10511-006-0002-6. Bibcode: 2006Ap.....49....3K.
4. ↑ F. A. Santana; R. R. Munoz; T. J. L. de Boer; J. D. Simon; M. Geha; P. Cote; A. E. Guzman; P. Stetson et al. (2016). "A MegaCam Survey of Outer Halo Satellites. VI. The Spatially Resolved Star-formation History of the Carina Dwarf Spheroidal Galaxy". Astrophysical Journal 829 (2): 86. doi:10.3847/0004-637X/829/2/86. Bibcode: 2016ApJ...829...86S.
5. ↑ "Carina Dwarf". http://spider.seds.org/spider/LG/car_dw.html.
6. ↑ R. D. Cannon; T. G. Hawarden; S. B. Tritton (1977). "A new Sculptor-type dwarf elliptical galaxy in Carina". Monthly Notices of the Royal Astronomical Society 180: 81–82. doi:10.1093/mnras/180.1.81p. Bibcode: 1977MNRAS.180P..81C.
7. ↑ Steve Phillipps (2004). "Small galaxies are growing smaller". Astronomy & Geophysics 45 (6): 6.6-6.9. doi:10.1046/j.1468-4004.2003.45606.x. Bibcode: 2004A&G....45f...6P.
8. ↑ The Satellite Galaxies
9. ↑ Hurley-Keller, Dennise; Mateo, Mario; Nemec, James (1998). "The Star Formation History of the Carina Dwarf Galaxy". The Astronomical Journal 115 (5): 1840–1855. doi:10.1086/300326. Bibcode: 1998AJ....115.1840H.
10. ↑ Kuhn, J. R.; Smith, Horace A.; Hawley, Suzanne L. (1996). "Tidal Disruption and Tails from the Carina Dwarf Spheroidal Galaxy". The Astrophysical Journal 469 (2): L93–L96. doi:10.1086/310270. Bibcode: 1996ApJ...469L..93K.

## External links

* Carina Dwarf at SEDS
* Observations of Tidal Disruption of the Carina Dwarf Spheroidal Galaxy
*   * The Carina Dwarf on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

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The Milky Way

Location|

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The Milky Way Galaxy

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* Sagittarius A
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Spiral arms|

* Carina–Sagittarius
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Satellite galaxies|

| Magellanic Clouds|

* Large Magellanic Cloud
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* Magellanic Stream
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|

Sagittarius Spheroidal|

* Sagittarius Stream
* Boötes II
* Coma Berenices
* Messier 54
* Palomar 12
* Segue 1
* Segue 2
* Terzan 7

Dwarfs|

* Antlia 2
* Boötes I
* Boötes III
* Canes Venatici I
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* Canis Major
* Carina
* Crater 2
* Draco
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* Pisces I
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* Sculptor
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* Triangulum II
* Ursa Major I
* Ursa Major II
* Ursa Minor
* Virgo I

Other|

* Gaia Sausage
* Monoceros Ring
* Virgo Stream
* Koposov I
* Koposov II
* Segue 3
* Willman 1

Related|

* Andromeda–Milky Way collision
* Baade's Window

Astronomy portal

Coordinates:  06h 41m 36.7s, −50° 57′ 58″

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