Astronomy:NGC 4495
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| 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] |
| Helio 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, UGC 7663, MCG+05-30-012, PGC 41438[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
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
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Results for object NGC 4495". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+4495.
- ↑ "Distance Results for NGC 4495". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+4495.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 4495". https://cseligman.com/text/atlas/ngc44a.htm#4495.
- ↑ "NGC 4495". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4495.
- ↑ 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". IAU. https://www.wis-tns.org/object/1994S.
- ↑ Green, D. W. E. (2010). "Supernova 2010lo near NGC 4495". Central Bureau Electronic Telegrams (2608): 1. Bibcode: 2010CBET.2608....1G. http://www.cbat.eps.harvard.edu/iau/cbet/002600/CBET002608.txt.
- ↑ "SN 2010lo". IAU. https://www.wis-tns.org/object/2010lo.
- ↑ 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. http://www.cbat.eps.harvard.edu/iau/cbet/002700/CBET002710.txt.
- ↑ "SN 2011ca". IAU. https://www.wis-tns.org/object/2011ca.
External links
- NGC 4495 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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