Dwarf Spheroidal Galaxy Antlia Dwarf (PGC 29194), type dE3,
Discovered by Corwin, de Vaucouleurs and de Vaucouleurs in 1985.
- 10 : 04.1
- -27 : 20
- 4600 kly
- Apparent Dimension:
- 2.0 x 1.5 arc min
- 5.5 kly
- 14.8 m_vis
- Abs. Mag:
Antlia dwarf has been discovered by research students Alan Whiting and
George Hau of Cambridge University (England) when visually inspecting
UK Schmidt Telescope photographic survey plates; the discovery was
announced on April 10, 1997 (see Whiting et.al.
1997). Within this work they also found the nearby probable non-member
Argo Dwarf galaxy.
While it was the Cambridge team who identified this galaxy as a Local Group
member candidate, it had been discovered previously by
Corwin et.al. (1985).
Also, it had been previously cataloged by
Feitzinger and Galinski (1985) where it is No. 256,
and by Fouque et. al. (1990) as PGC 29194.
None of these references, however, led to its identification as a potential
Local Group member.
The membership of this galaxy in the Local Group is still subject to current
research and discussion. The Antlia dwarf is a member of a small group of
galaxies around NGC 3109, which also contains the
dwarf galaxies Sextans A and
The group of Mike Irwin in Cambridge have it as a Local Group member, and
Mateo (1998) counts it to the NGC 3109 subgroup of
our small cluster of galaxies.
On the other hand, van den Bergh (1999) takes
this for a small but independent nearby group of galaxies, the nearest
neighbor to our Local Group.
- Corwin, H.G., de Vaucouleurs, A. and de Vaucouleurs, G.,
1985. Southern galaxy catalogue. A catalogue of 5481 galaxies south of declination
-17 grad. found on 1.2m UK Schmidt IIIa J plates.
University of Texas Monographs in Astronomy, Austin
- Feitzinger, J.V. and Galinski, Th., 1985.
A catalogue of dwarf galaxies south of delta = -17.5 deg.
Astronomy and Astrophysics Supplement Series, vol. 61, Sept. 1985, p. 503-515
- Fouque, P., Durand, N., Bottinelli, L., Gouguenheim, L.,
and Paturel, G., 1990.
An HI survey of late-type galaxies in the Southern Hemisphere. I - The SGC sample.
Astronomy and Astrophysics Supplement Series, vol. 86, no. 3, Dec. 1990, p.
- Mario Mateo, 1998.
Dwarf Galaxies of the Local Group.
Annual Review of Astronomy and Astrophysics, Volume 36, 1998, p. 435-506.
table of Local Group galaxies (NED Level 5)
- Sidney van den Bergh, 1999.
The nearest group of Galaxies.
Astrophysical Journal, Vol. 517, p. L97-L99 (June 1, 1999)
- A.B. Whiting, M.J. Irwin and G.K.T. Hau, 1997.
A new galaxy in the Local Group: The Antlia Dwarf galaxy.
Astronomical Journal v.114, p. 996-1001 (September 1997)
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Last Modification: June 26, 2003