Astronomy:GR 8
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| GR 8 | |
|---|---|
| File:GR 8.jpg True-color reproduction of the HST WFPC2 image of the dI galaxy GR 8. | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 58m 40.4s[1] |
| Declination | +14° 13′ 03″[1] |
| Redshift | 214 ± 0 km/s[1] |
| Distance | 7.9 Mly (2.4 Mpc) |
| Apparent magnitude (V) | 14.7[1] |
| Characteristics | |
| Type | ImV[1] |
| Apparent size (V) | 1′.1 × 1′.0[1] |
| Other designations | |
| PGC 44491,[1] DDO 155,[1] GR 8,[1] Imprint of a Foot[1] | |
GR 8 (also known as UGC 8091) is a gas-rich dwarf irregular galaxy.[2] In 1995, Tolstoy et al. estimated its distance (with the Hipparcos correction of 1997 applied) to be approximately 7.9 million light-years (5.0×1011 AU) from Earth. There is still open question regarding if it is a member of the Local Group. It was discovered at the Lick Observatory using the 20-inch astrograph in either 1946, 1947, or 1951.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 "NASA/IPAC Extragalactic Database". Results for UGC 8091. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=UGC+8091#ObjNo1. Retrieved 2007-03-15.
- ↑ Tolstoy, Eline (1999). "Detailed Star-Formation Histories of Nearby Dwarf Irregular Galaxies using HST". The stellar content of Local Group galaxies, Proceedings of the 192nd symposium of the International Astronomical Union. Astronomical Society of the Pacific. pp. 218. ISBN 1886733821. Bibcode: 1999IAUS..192..218T.
External links
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