Antlia Dwarf

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Antlia Dwarf
Observation data (J2000 epoch)
Constellation Antlia
Right ascension 10h 04m 03.9s[1]
Declination -27° 19′ 55″[1]
Redshift 362 ± 0 km/s[1]
Distance 4.31 ± 0.20 Mly (1.32 ± 0.06 Mpc)[2][3]
Type dE3.5[1]
Apparent dimensions (V) 2′.0 × 1′.5[1]
Apparent magnitude (V) 16.2[1]
Other designations
Antlia Dwarf Galaxy,[1] PGC 29194[1]
See also: Galaxy, List of galaxies

Antlia Dwarf is a dwarf elliptical galaxy. It lies 4.3 Mly from Earth in the constellation Antlia. It is one of most distant members of the Local Group. The Antilia Dwarf is believed to be tidally interacting with the small barred spiral galaxy, NGC 3109.[4]

[edit] History

Antlia dwarf was discovered in 1999 by Alan Whiting, George Hau and Mike Irwin and was found to be just beyond the zero-velocity surface of the Local Group.[5]

[edit] References

  1. ^ a b c d e f g h NASA/IPAC Extragalactic Database. Results for Antlia Dwarf. Retrieved on 2006-11-30.
  2. ^ I. D. Karachentsev, V. E. Karachentseva, W. K. Hutchmeier, D. I. Makarov (2004). "A Catalog of Neighboring Galaxies". Astronomical Journal 127: 2031–2068. doi:10.1086/382905. 
  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. 
  4. ^ Grebel, Eva K.; Gallagher, John S., III & Harbeck, Daniel (April 2003), “The Progenitors of Dwarf Spheroidal Galaxies”, The Astronomical Journal 125 (4): 1926-1939, <http://adsabs.harvard.edu/abs/2003AJ....125.1926G> 
  5. ^ 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, <http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2000PASP..112..529V> 
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