Antlia dwarf galaxy
| Galaxy Antlia dwarf galaxy |
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|---|---|
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| AladinLite | |
| Constellation | Air pump |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 10 h 04 m 03.9 s |
| declination | -27 ° 20 ′ 01 ″ |
| Appearance | |
| Morphological type | dE3 |
| Brightness (visual) | 14.8 mag |
| Brightness (B-band) | (−10.7 ± 0.3) mag |
| Angular expansion | 2 ′, 0 × 1 ′, 5 |
| Physical data | |
| Affiliation | Local group |
| Redshift | +0.001208 |
| Radial velocity | +362 km / s |
| distance | 4.6 million ly |
| diameter | 5500 ly |
| history | |
| discovery |
Harold G. Corwin Gérard H. de Vaucouleurs Antoinette de Vaucouleurs |
| Discovery date | 1985 |
| Catalog names | |
| PGC 29194 • SGC 1001.9-2705 • AM 1001-270 | |
The Antlia dwarf galaxy (catalog number PGC 29194 ) is an elliptical dwarf galaxy (type dE3) in the constellation Air Pump . The galaxy, measuring only 5500 light years in diameter, has an angular extent of 2.0 × 1.5 arc minutes and is one of the most distant members of the Local Group at a distance of about 4.6 million light years . With a brightness of only 14.8 mag , this galaxy cannot be seen with smaller telescopes.
The Antlia dwarf galaxy was discovered in 1985 by Harold G. Corwin , Gérard H. de Vaucouleurs, and Antoinette de Vaucouleurs . However, it was not until 1997 that a report published their possible membership in the local group.
Web links
Individual evidence
- ↑ NAME ANTLIA DWARF GALAXY - Galaxy. In: SIMBAD. Center de Données astronomiques de Strasbourg, accessed on September 11, 2011 .
- ↑ NASA / IPAC Extragalactic Database