NGC 4495
| NGC 4495 | |
|---|---|
 NGC 4495 imaged by the Cerro Tololo Inter-American Observatory | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 31m 22.9217s[1] |
| Declination | +29° 08′ 11.472″[1] |
| Redshift | 0.015243[1] |
| Heliocentric radial velocity | 4570 ± 3 km/s[1] |
| Distance | 233.3 ± 16.4 Mly (71.54 ± 5.02 Mpc)[1] |
| Apparent magnitude (V) | 13.3[1] |
| Characteristics | |
| Type | Sab[1] |
| Size | ~104,000 ly (31.89 kpc) (estimated)[1] |
| Apparent size (V) | 1.4′ × 0.8′[1] |
| Other designations | |
| IRAS 12289+2924, 2MASX J12312290+2908109, UGC 7663, MCG +05-30-012, PGC 41438, CGCG 159-009[1] | |
NGC 4495 is a spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 4850 ± 20 km/s, which corresponds to a Hubble distance of 233.3 ± 16.4 Mly (71.54 ± 5.02 Mpc).[1] Additionally, 31 non-redshift measurements give a distance of 223.50 ± 3.58 Mly (68.526 ± 1.099 Mpc).[2] It was discovered by German-British astronomer William Herschel on 13 March 1785.[3]
According to the SIMBAD database, NGC 4495 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[4]
Supernovae
[edit]Three supernovae have been observed in NGC 4495:
- SN 1994S (type Ia, mag. 14.5) was discovered by Larry Mitchell on 4 June 1994.[5][6]
- SN 2010lo (type unknown, mag. 17.3) was discovered by the La Sagra Sky Survey on 15 December 2010.[7][8]
- SN 2011ca (type Ic, mag. 17.2) was discovered by Fabrizio Ciabattari and E. Mazzoni on 26 April 2011.[9][10]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "Results for object NGC 4495". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 14 December 2024.
- ^ "Distance Results for NGC 4495". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 14 December 2024.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 4495". Celestial Atlas. Retrieved 14 December 2024.
- ^ "NGC 4495". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 14 December 2024.
- ^ Skiff, B.; Mitchell, L.; Wheeler, J. C.; Wills, D.; Clocchiatti, A. (1994). "Supernova 1994S in NGC 4495". International Astronomical Union Circular (6005): 1. Bibcode:1994IAUC.6005....1S.
- ^ "SN 1994S". Transient Name Server. IAU. Retrieved 14 December 2024.
- ^ Green, D. W. E. (2010). "Supernova 2010lo near NGC 4495". Central Bureau Electronic Telegrams. 2608: 1. Bibcode:2010CBET.2608....1G.
- ^ "SN 2010lo". Transient Name Server. IAU. Retrieved 14 December 2024.
- ^ Ciabattari, F.; Mazzoni, E.; Marion, G. H.; Berlind, P. (2011). "Supernova 2011ca in NGC 4495 = PSN J12312490+2907500". Central Bureau Electronic Telegrams. 2710: 1. Bibcode:2011CBET.2710....1C.
- ^ "SN 2011ca". Transient Name Server. IAU. Retrieved 14 December 2024.
External links
[edit]
Media related to NGC 4495 at Wikimedia Commons- NGC 4495 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
