UGC 8508
| UGC 8508 | |
|---|---|
 UGC 8508 (Hubble Space Telescope) | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 13h 30m 44.4s |
| Declination | +54° 54′ 36″ |
| Redshift | +198 km/s |
| Distance | 8.500 ± 0.075 Mly (2.606 ± 0.023 Mpc)[1] |
| Apparent magnitude (V) | 12.88 |
| Characteristics | |
| Type | IAm |
| Size | 1.29 kpc |
| Apparent size (V) | 1.7′ × 1.0' |
| Other designations | |
| I Zw 060, PGC 47495 | |
UGG 8508 is a dwarf irregular galaxy located about 8.5 million light-years away from Earth in the constellation of Ursa Major.[1] It is sometimes classified as a member of the M101 Group of galaxies and has a diameter of around 4.2 kly (1.29 kpc).
As an irregular galaxy, UGC 8508 does not exhibit any large scale organization in its structure. It has a relatively low-luminosity and a large number of H I regions, which contribute to its bluish appearance in the visible spectrum. However, the presence of a significant number of both blue and red supergiant stars indicate it is likely to have undergone a period of rapid star formation in the cosmologically-recent past. The distribution of the supergiants suggest that the star formation has largely ceased at distances greater than 1.3 kly (0.4 kpc) from the center of the galaxy.[2]
References
- ^ a b "NED results for UGC 8508". NASA/IPAC Extragalactic Database via Univ. of California. Retrieved 2024-02-15.
- ^ J. R. Mould; D. P. Schneider; P. Harding & G. D. Bothun (1986). "UGC 8508 - A Dwarf Galaxy Associated with the M101 Group". Publications of the Astronomical Society of the Pacific. 98 (606): 732–739. doi:10.1086/131819.
External links
Media related to UGC 8508 at Wikimedia Commons
