| NGC 4570 | |
|---|---|
 SDSS image of NGC 4570. | |
| Observation data (J2000epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 36m 53.4s[1] |
| Declination | 07° 14′ 48″[1] |
| Redshift | 0.005961[1] |
| Heliocentric radial velocity | 1787 km/s[1] |
| Distance | 57.30 Mly (17.569 Mpc)[1] |
| Group orcluster | Virgo Cluster |
| Apparent magnitude (V) | 11.84[1] |
| Characteristics | |
| Type | S0[1] |
| Size | ~70,000 ly (21.46 kpc) (estimated)[1] |
| Apparent size (V) | 3.8 x 1.1[1] |
| Other designations | |
| CGCG 42-178, MCG 1-32-114, PGC 42096, UGC 7785, VCC 1692[1] | |
NGC 4570 is an edge-onlenticular galaxy located about 57 millionlight-years away[2] in the constellationVirgo.[3] NGC 4570 was discovered by astronomerWilliam Herschel on April 13, 1784[4] and is a member of theVirgo Cluster.[5][6]
NGC 4570 has a nuclear disc that extends to a radius of about ~330 ly (100 pc). In between[7] the nuclear disk and the surrounding two stellar rings and the outer disk,[8][9] there is a gap that separates the outer edge of the nuclear disk and the inner edge of the main disk by about ~330 ly (100 pc).[7] This multi-disc structure may have been shaped through secular evolution induced by a small nuclear bar.[10][9] However, observations of theglobular clusters surrounding NGC 4570 have found a significant population with ages ranging from about 1–3billion years. Surprisingly, the estimated ages of the youngglobular clusters appears to be in good agreement with the estimated age of the stellar population of the nuclear disc (≤2 Gyr). This suggests that the youngglobular clusters and the nuclear disc instead formed from amerger oraccretion event which involved significant amounts of gas and triggered a strongstarburst in the galaxy.[11]
About 120globular clusters have been detected surrounding NGC 4570.[8]
