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GR 8 (galaxy) 
Summary
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. It is around 2.8 Mly from UGC 9128.[3] It is still an open question whether it is a member of the Local Group or possibly the Virgo Cluster.[4]
| GR 8 | |
|---|---|
 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 was discovered at the Lick Observatory using the 20-inch astrograph in either 1946, 1947, or 1951.
References edit
- ^ a b c d e f g h i j "NASA/IPAC Extragalactic Database". Results for UGC 8091. Retrieved 2007-03-15.
- ^ Tolstoy, Eline (1999). "Detailed Star-Formation Histories of Nearby Dwarf Irregular Galaxies using HST". In Patricia Whitelock; Russell Cannon (eds.). The stellar content of Local Group galaxies, Proceedings of the 192nd symposium of the International Astronomical Union. Vol. 192. Astronomical Society of the Pacific. p. 218. Bibcode:1999IAUS..192..218T. ISBN 1886733821.
{{cite book}}:|journal=ignored (help) - ^ Aparicio, A.; Tikhonov, N.; Karachentsev, I. (1999). "Aparicio, Tikhonov, & Karachentsev, DDO 187". arXiv:astro-ph/9909493. doi:10.1086/301157. S2CID 15309075. Retrieved 8 August 2021.
{{cite journal}}: Cite journal requires|journal=(help) - ^ "GR 8". spider.seds.org. Retrieved 2023-04-30.
External links edit
- Irregular Galaxy GR 8: Footprint Galaxy
- DDO 155 picture (almost halfway down page)