NGC 4527
Galaxy in the constellation Virgo
From Wikipedia, the free encyclopedia
NGC 4527 is a spiral galaxy in the constellation Virgo. It was discovered by German-British astronomer William Herschel on 23 February 1784.[2]
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| NGC 4527 | |
|---|---|
NGC 4527 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 34m 08.466s[1] |
| Declination | +02° 39′ 14.414″[1] |
| Redshift | 0.005791[1] |
| Heliocentric radial velocity | 1736 ± 1 km/s[1] |
| Distance | 48.9 Mly |
| Apparent magnitude (V) | 11.4[1] |
| Characteristics | |
| Type | SAB(s)bc[1] |
| Size | ~104,100 ly (31.92 kpc) (estimated)[1] |
| Apparent size (V) | 6.2′ × 2.1′[1] |
| Other designations | |
| IRAS 12315+0255, UGC 7721, MCG +01-32-101, PGC 41789, CGCG 042-156[1] | |
NGC 4527 is a member of the M61 Group of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.[3]
Characteristics
NGC 4527 is an intermediate spiral galaxy similar to the Andromeda Galaxy[4] and is located at a distance not well determined, but usually is considered to be an outlying member of the Virgo Cluster of galaxies,[5] being placed within the subcluster known as S Cloud.[6]
Unlike the Andromeda Galaxy, NGC 4527 is also a starburst galaxy, with 2.5 billion solar masses of molecular hydrogen concentrated within its innermost regions.[7] However said starburst is still weak and seems to be on its earliest phases.[7]
Supernovae
Three supernovae have been observed in NGC 4527:
- SN 1915A (type unknown, mag. 15.5) was discovered by Heber Curtis on 20 March 1915.[8][9][10]
- SN 1991T (Type Ia-pec, mag. 13) was discovered by Stephen Knight on 13 April 1991, and independently reported by Robert Evans, Mirko Villi, Giancarlo Cortini, and Wayne Johnson.[11][12] This supernova has been studied extensively as a peculiar and overluminous Type Ia, and is now used as a template, with similar events being classified as Type Ia-91T-like.[13][14]
- SN 2004gn (Type Ic, mag. 16.6) was discovered by the Lick Observatory Supernova Search (LOSS) on 1 December 2004.[15][16][17]
