NGC 4580
Galaxy in the constellation Virgo
From Wikipedia, the free encyclopedia
NGC 4580 is an unbarred spiral galaxy[2] located about 70 million light-years away[3] in the constellation Virgo.[4] NGC 4580 is also classified as a LINER galaxy.[3][5] It was discovered by astronomer William Herschel on February 2, 1786[6] and is a member of the Virgo Cluster.[2][7]
| NGC 4580 | |
|---|---|
SDSS image of NGC 4580 | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 37m 48.4s[1] |
| Declination | 05° 22′ 07″[1] |
| Redshift | 0.003449[1] |
| Heliocentric radial velocity | 1034 km/s[1] |
| Distance | 69.35 Mly (21.263 Mpc)[1] |
| Group or cluster | Virgo Cluster |
| Apparent magnitude (V) | 12.7[1] |
| Characteristics | |
| Type | SAB(rs)a pec, LINER[1] |
| Size | ~52,400 ly (16.08 kpc) (estimated)[1] |
| Apparent size (V) | 2.28 x 1.45[1] |
| Other designations | |
| CGCG 42-183, IRAS 12352+0538, MCG 1-32-117, PGC 42174, UGC 7794, VCC 1730[1] | |
Physical characteristics
NGC 4580 consists of a ringed structure. The inner pseudoring of the galaxy is very well-defined and is made of two tightly wound spiral arms. Three very diffuse spiral arms which are partly defined by dust, split off from the inner pseudoring.[2]
Truncated disk
NGC 4580 has a severely truncated star-forming disk. This may be due to ram-pressure stripping[2] caused by the infall of the Messier 49 subcluster into the Virgo Cluster.[8] Due to the truncation of the star forming disk, NGC 4580 is classified as an anemic galaxy.[9]
