NGC 4458
| NGC4458 | |
|---|---|
 The elliptical galaxy NGC 4458 as imaged by theSDSS. | |
| Observation data (J2000epoch) | |
| Constellation | Virgo |
| Right ascension | 12h28m57.5s[1] |
| Declination | 13° 14′ 31″[1] |
| Redshift | 0.002258/677 km/s[1] |
| Distance | 54,801,600ly |
| Grouporcluster | 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,PGC41095,UGC7610, VCC 1146[1] | |
NGC 4458is anelliptical galaxylocated about 54 millionlight-yearsaway[3][4]in theconstellationofVirgo.[5]It was discovered by astronomerWilliam Herschelon April 12, 1784.[6]NGC 4458 is a member ofMarkarian's Chainwhich is part of theVirgo Cluster.[7]It is in a pair with the galaxyNGC 4461.[8]NGC 4458 andNGC 4461are interacting with each other.[9]
NGC 4458 may have asupermassive black holewith an estimated mass of 200 million Suns (2×108M☉).[2]
Nuclear disk
[edit]NGC 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
[edit]Using Hubble images, it has been determined that NGC 4458 has a counter-rotating core.[9]
Metallicity
[edit]NGC 4458 has a low metal content but has an overabundance of the elementiron.[9]
See also
[edit]References
[edit]- ^abcdefgh"NASA/IPAC Extragalactic Database".Results for NGC 4458.Retrieved2017-08-06.
- ^abPechetti, 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.ISSN1538-4357.S2CID119357906.
- ^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.CiteSeerX10.1.1.258.1582.doi:10.1086/301440.S2CID9684945.
- ^"Your NED Search Results".ned.ipac.caltech.edu.Retrieved2017-08-09.
- ^"NGC 4458 in the Virgo cluster of galaxies".www.spacetelescope.org.Retrieved2017-08-06.
- ^"New General Catalog Objects: NGC 4450 - 4499".cseligman.com.Retrieved2017-08-01.
- ^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.Retrieved2017-08-09.
- ^abcMorelli, 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.S2CID13933949.
- ^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.S2CID55627361.
- ^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.S2CID16619922.
- ^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 toNGC 4458.
- NGC 4458 onWikiSky:DSS2,SDSS,GALEX,IRAS,Hydrogen α,X-Ray,Astrophoto,Sky Map,Articles and images
