UGC 4904 is a barred spiral galaxy in the constellation Lynx. Its velocity with respect to the cosmic microwave background is 1880 ± 15 km/s, which corresponds to a Hubble distance of 90.5 ± 6.4 Mly (27.74 ± 1.96 Mpc).[1] The first known reference to this galaxy comes from Part 2 of the Morphological Catalogue of Galaxies, published in 1964, where it is listed as MCG +07-19-054.[4]
| UGC 4904 | |
|---|---|
 UGC 4904, imaged by the Sloan Digital Sky Survey | |
| Observation data (J2000 epoch) | |
| Constellation | Lynx |
| Right ascension | 09h 17m 22.062s[1] |
| Declination | +41° 54′ 39.70″[1] |
| Redshift | 0.005571[2] |
| Heliocentric radial velocity | 1665[2] |
| Distance | 90.5 ± 6.4 Mly (27.74 ± 1.96 Mpc)[1] |
| Apparent magnitude (B) | 15.0[1] |
| Characteristics | |
| Type | SABdm[3] |
| Size | ~31,200 ly (9.58 kpc) (estimated)[1] |
| Notable features | Dwarf spiral galaxy with a supernova impostor which eventually exploded as an actual supernova |
| Other designations | |
| MCG +07-19-054, PGC 26231, CGCG 209-044[1] | |
Supernova
editOn October 20, 2004, a supernova impostor was observed by Japanese amateur astronomer Kōichi Itagaki within the galaxy. This same star may have transitioned from a luminous blue variable star to a Wolf–Rayet star[5] shortly before it was observed as blowing up as supernova SN 2006jc (type Ibn, mag. 13.8)[6] on October 11, 2006.[7]
References
edit- ^ a b c d e f g "NED results for object UGC 4904". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 29 January 2017.
- ^ a b Nordgren, Tyler E.; Chengalur, Jayaram N.; Salpeter, E. E.; Terzian, Yervant (1997). "Close galaxy pairs in low and medium density regions: The southern sky". Astronomical Journal. 114: 913–931. Bibcode:1997AJ....114..913N. doi:10.1086/118523.
- ^ Ann, H. B.; Seo, Mira; Ha, D. K. (2015). "A Catalog of Visually Classified Galaxies in the Local (z ∼ 0.01) Universe". The Astrophysical Journal Supplement Series. 217 (2): 27–49. arXiv:1502.03545. Bibcode:2015ApJS..217...27A. doi:10.1088/0067-0049/217/2/27. S2CID 119253507.
- ^ Vorontsov-Vel'Yaminov, B. A.; Arkhipova, V. P. (1964). "Morphological catalogue of galaxies. Part 2". Morphological Catalogue of Galaxies. C02. Bibcode:1964MCG...C02....0V.
- ^ "Massive Star Burps, Then Explodes". Univ. of California, at Berkeley. Retrieved April 4, 2007.
- ^ "SN 2006jc". Transient Name Server. IAU. Retrieved 13 November 2024.
- ^ "NASA – Supernova Imposter Goes Supernova". NASA.Gov. Retrieved April 4, 2007.
External links
edit- UGC 4904 in a SIMBAD
- UGC 4904 in NASA's Extragalactic Database
- UGC 4904 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
 | This spiral galaxy article is a stub. You can help Wikipedia by expanding it. |