Wiki Article
NGC 3842
Nguồn dữ liệu từ Wikipedia, hiển thị bởi DefZone.Net
| NGC 3842 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11h 44m 02.2s[1] |
| Declination | 19° 56′ 59.3″[1] |
| Redshift | 0.021068 ± 0.000031[1] |
| Heliocentric radial velocity | 6316 ± 9 km/s[1] |
| Distance | 325 Mly (99.6 Mpc) |
| Group or cluster | Leo Cluster |
| Apparent magnitude (V) | 12.78[1] |
| Characteristics | |
| Type | E[1] |
| Apparent size (V) | 1.4 x 1.0[1] |
| Notable features | brightest member of the Leo Cluster, has a 34.6 billion solar mass black hole |
| Other designations | |
| UGC 6704, PGC 36487, MCG 3-30-72, ZWG 97.95,[1] | |
NGC 3842 is an elliptical galaxy in the constellation of Leo. It was discovered by William Herschel. It is notable for containing one of the largest black holes ever detected, reported to have a current estimated mass of 34.6+63.0
−22.4 billion solar masses (M☉) based on the break radius method (with the range being 12.2 billion M☉ to 97.6 billion M☉).[2][3] Previous estimates yield at least 9.7+3.0
−2.5 billion solar masses (M☉).[4] It is around 330 million light-years (101.18 million parsecs) distant from Earth.
NGC 3842 is the brightest member[5] of the Leo Cluster.[6][7]
References
[edit]- ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 3842. Retrieved 2011-12-05.
- ^ Dullo, B.T. (22 November 2019). "The Most Massive Galaxies with Large Depleted Cores: Structural Parameter Relations and Black Hole Masses". The Astrophysical Journal. 886 (2): 80. arXiv:1910.10240. Bibcode:2019ApJ...886...80D. doi:10.3847/1538-4357/ab4d4f. S2CID 204838306.
- ^ Dullo, B.T.; de Paz, A.G.; Knapen, J.H. (18 February 2021). "Ultramassive black holes in the most massive galaxies: MBH−σ versus MBH−Rb". The Astrophysical Journal. 908 (2): 134. arXiv:2012.04471. Bibcode:2021ApJ...908..134D. doi:10.3847/1538-4357/abceae. S2CID 227745078.
- ^ Rincon, Paul (2011-12-05). "Team sees biggest black holes yet". bbc.co.uk. Retrieved 2011-12-05.
- ^ "NGC 3842". Retrieved 2018-04-19.
- ^ "Are You Ready, Willing, and Abell? - Sky & Telescope". Sky & Telescope. 2017-04-26. Retrieved 2018-04-19.
- ^ "Record massive black holes discovered lurking in monster galaxies". Berkeley News. 2011-12-05. Retrieved 2018-04-19.
External links
[edit]
Media related to NGC 3842 at Wikimedia Commons
 | This elliptical galaxy article is a stub. You can help Wikipedia by adding missing information. |