NGC 4458 is an elliptical galaxy located about 54 million light-years away[3][4] in the constellation of Virgo.[5] It was discovered by astronomer William Herschel on April 12, 1784.[6] NGC 4458 is a member of Markarian's Chain which is part of the Virgo Cluster.[7] It is in a pair with the galaxy NGC 4461.[8] NGC 4458 and NGC 4461 are interacting with each other.[9]
| NGC 4458 | |
|---|---|
 The elliptical galaxy NGC 4458 as imaged by the SDSS. | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 28m 57.5s[1] |
| Declination | 13° 14′ 31″[1] |
| Redshift | 0.002258/677 km/s[1] |
| Distance | 54,801,600 ly |
| Group or cluster | Virgo Cluster |
| Apparent magnitude (V) | 12.93 [1] |
| Characteristics | |
| Type | E0 [1] |
| Mass | ~1.07×1010[2] M☉ |
| Size | ~ 29,000 ly (estimated)[1] |
| Apparent size (V) | 1.7 x 1.6[1] |
| Other designations | |
| CGCG 70-114, MCG 2-32-82, PGC 41095, UGC 7610, VCC 1146[1] | |
NGC 4458 may have a supermassive black hole with an estimated mass of 200 million Suns (2×108 M☉).[2]
Nuclear disk
editNGC 4458 has an edge-on nuclear disk which is estimated to be about 6 billion years old.[10] The disk likely formed from the merger of a gas-rich galaxy and has been found to have "similar properties to the decoupled cores of bright ellipticals".[11] [12]
Counter-rotating core
editUsing Hubble images, it has been determined that NGC 4458 has a counter-rotating core.[9]
Metallicity
editNGC 4458 has a low metal content but has an overabundance of the element iron.[9]
See also
editReferences
edit- ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 4458. Retrieved 2017-08-06.
- ^ a b Pechetti, Renuka; Seth, Anil; Cappellari, Michele; McDermid, Richard; Brok, Mark den; Mieske, Steffen; Strader, Jay (2017-11-13). "Detection of Enhanced Central Mass-to-light Ratios in Low-mass Early-type Galaxies: Evidence for Black Holes?". The Astrophysical Journal. 850 (1): 15. arXiv:1709.09172. Bibcode:2017ApJ...850...15P. doi:10.3847/1538-4357/aa9021. ISSN 1538-4357. S2CID 119357906.
- ^ Tomita, Akihiko; Aoki, Kentaro; Watanabe, Masaru; Takata, Tadafumi; Ichikawa, Shin-ichi (29 March 2000). "The Central Gas Systems of Early-Type Galaxies Traced by Dust Feature: Based on the HST WFPC2 Archival Images". The Astronomical Journal. 120 (1): 18. arXiv:astro-ph/0003431. Bibcode:2000AJ....120..123T. CiteSeerX 10.1.1.258.1582. doi:10.1086/301440. S2CID 9684945.
- ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-08-09.
- ^ "NGC 4458 in the Virgo cluster of galaxies". www.spacetelescope.org. Retrieved 2017-08-06.
- ^ "New General Catalog Objects: NGC 4450 - 4499". cseligman.com. Retrieved 2017-08-01.
- ^ Markarian, B.E. (December 1961). "Physical chain of galaxies in the Virgo cluster and its dynamic instability" (PDF). Astronomical Journal. 66: 555–557. Bibcode:1961AJ.....66..555M.
- ^ "NGC 4458". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-08-09.
- ^ a b c Morelli, L.; Halliday, C.; Corsini, E. M.; Pizzella, A.; Thomas, D.; Saglia, R. P.; Davies, R. L.; Bender, R.; Birkinshaw, M.; Bertola, F. (19 July 2004). "Nuclear stellar discs in low-luminosity elliptical galaxies: NGC 4458 and 4478" (PDF). Monthly Notices of the Royal Astronomical Society. 354 (3): 753–762. arXiv:astro-ph/0408084. Bibcode:2004MNRAS.354..753M. doi:10.1111/j.1365-2966.2004.08236.x. S2CID 13933949.
- ^ Sarzi, M.; Ledo, H. R.; Coccato, L.; Corsini, E. M.; Dotti, M.; Khochfar, S.; Maraston, C.; Morelli, L.; Pizzella, A. (13 January 2016). "Nuclear discs as clocks for the assembly history of early-type galaxies: the case of NGC 4458". Monthly Notices of the Royal Astronomical Society. 457 (2): 1804–1812. arXiv:1601.03292. Bibcode:2016MNRAS.457.1804S. doi:10.1093/mnras/stw099. S2CID 55627361.
- ^ Morelli, L.; Cesetti, M.; Corsini, E. M.; Pizzella, A.; Bonta`, E. Dalla; Sarzi, M.; Bertola, F. (20 May 2010). "Multiband photometric decomposition of nuclear stellar disks". Astronomy & Astrophysics. 518: A32. arXiv:1004.2190. Bibcode:2010A&A...518A..32M. doi:10.1051/0004-6361/201014285. S2CID 16619922.
- ^ L. Morelli, C. Halliday, E. M. Corsini, A. Pizzella, D. Thomas, R. P. Saglia, R. L. Davies, R. Bender, M. Birkinshaw, F. Bertola, Nuclear stellar discs in low-luminosity elliptical galaxies: NGC 4458 and 4478, Monthly Notices of the Royal Astronomical Society, Volume 354, Issue 3, November 2004, Pages 753–762, https://doi.org/10.1111/j.1365-2966.2004.08236.x}
External links
edit
Wikimedia Commons has media related to NGC 4458.
- NGC 4458 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images