Cetus dwarf galaxy
| Galaxy Cetus dwarf galaxy |
|
|---|---|
|
|
| AladinLite | |
| Constellation | whale |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 00 h 26 m 11.0 s |
| declination | -11 ° 02 ′ 40 ″ |
| Appearance | |
| Morphological type | dSph |
| Brightness (visual) | 14.4 mag |
| Angular expansion | 5′.0 × 4′.3 |
| Physical data | |
| Affiliation | Local group |
| distance | (2,460,000 ± 80,000) ly / (755,000 ± 524,000) pc |
| history | |
| discovery | Alan Whiting, George Hau and Mike Irwin |
| Discovery date | 1999 |
| Catalog names | |
| PGC 3097691 • | |
The Cetus dwarf galaxy is a spheroid dwarf galaxy in the constellation of the whale . It is about 2.46 million light years away from our solar system and is one of the most isolated galaxies in the Local Group , a group of galaxies to which our Milky Way is a member.
history
The Cetus dwarf galaxy was discovered in 1999 by Alan Whiting, George Hau and Mike Irwin and identified as a member of the Local Group .
properties
So far (status: 2000) no interstellar neutral hydrogen gas has been discovered within the Cetus dwarf galaxy . All of the recently observable stars in this galaxy are red giants .
Individual evidence
- ↑ a b c d NED
- ↑ a b A. W. McConnachie, MJ Irwin, AMN Ferguson, RA Ibata, GF Lewis, N. Tanvir: Distances and metallicities for 17 Local Group galaxies . In: Monthly Notices of the Royal Astronomical Society . 356, No. 4, 2005, pp. 979-997. arxiv : astro-ph / 0410489 . bibcode : 2005MNRAS.356..979M . doi : 10.1111 / j.1365-2966.2004.08514.x .
- ^ A b Sidney van den Bergh : Updated Information on the Local Group . In: The Publications of the Astronomical Society of the Pacific . 112, No. 770, April 2000, pp. 529-536. arxiv : astro-ph / 0001040 . bibcode : 2000PASP..112..529V . doi : 10.1086 / 316548 .
- ↑ Cetus Dwarf at SEDS