The Full Wiki

More info on Messier 84

Messier 84: Wikis


Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! This article doesn't yet, but we're working on it! See more info or our list of citable articles.


From Wikipedia, the free encyclopedia

Messier 84
M84. Credit:NOAO.
Observation data (J2000 epoch)
Constellation Virgo
Right ascension 12h 25m 03.7s[1]
Declination +12° 53′ 13″[1]
Redshift 1060 ± 6 km/s[1]
Distance 60 ± 3 Mly (18.4 ± 0.9 Mpc)[2]
Type E1[1]
Apparent dimensions (V) 6′.5 × 5′.6[1]
Apparent magnitude (V) 10.1[1]
Notable features -
Other designations
NGC 4374,[1] UGC 7494,[1] PGC 40455,[1] VCC 763[1]
See also: Galaxy, List of galaxies

Messier 84 (also known as M84 or NGC 4374) is a lenticular galaxy in the constellation Virgo. M84 is situated in the heavily populated inner core of the Virgo Cluster of galaxies.[3]

Radio observations and images of the Hubble Space Telescope of M84 have revealed two jets of matter shooting out from the galaxy's center as well as a disk of rapidly rotating gas and stars close to the nucleus indicating the presence of a supermassive black hole of 18  × 108 M[4] in the galaxy's nucleus.

Messier 84 nucleus by HST



Charles Messier discovered Messier 84 on 18 March 1781 in a systematic search for "nebulous objects" in the night sky[5]. The object is the 84th in the Messier Catalogue.


Two supernovae have been observed in M84: SN 1957[6] and SN 1991bg.[7] Possibly, a third, SN 1980I is part of M84 or, alternatively, one of its neighboring galaxies, NGC 4387 and M86.[8]

External links


  1. ^ a b c d e f g h i j "NASA/IPAC Extragalactic Database". Results for NGC 4374. Retrieved 2006-11-14.  
  2. ^ J. L. Tonry, A. Dressler, J. P. Blakeslee, E. A. Ajhar, A. B. Fletcher, G. A. Luppino, M. R. Metzger, C. B. Moore (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal 546 (2): 681–693. doi:10.1086/318301.  
  3. ^ Finoguenov, A.; Jones, C. (2002). "Chandra Observation of Low-Mass X-Ray Binaries in the Elliptical Galaxy M84". The Astrophysical Journal 574 (2): 754–761. doi:10.1086/340997.  
  4. ^ Ly, C.; Walker, R. C.; Wrobel, J. M. (2004). "An Attempt to Probe the Radio Jet Collimation Regions in NGC 4278, NGC 4374 (M84), and NGC 6166". The Astronomical Journal 127 (1): 119–124. doi:10.1086/379855.  
  5. ^ K. G. Jones (1991). Messier's Nebulae and Star Clusters (2nd ed.). Cambridge: Cambridge University Press. ISBN 0-521-37079-5.  
  6. ^ Götz, W. (1958). "Supernova in NGC 4374 (= M 84)". Astronomische Nachrichten 284: 141. doi:10.1002/asna.19572840308.  
  7. ^ Kosai, H.; Kushida, R.; Kato, T.; Filippenko, A.; Newberg, H. (1958). "Supernova 1991bg in NGC 4374". IAU Circ. 5400: 1.  
  8. ^ Smith, H. A. (July 1981). "The spectrum of the intergalactic supernova 1980I". Astronomical Journal 86: 998–1002. doi:10.1086/112975.  

Coordinates: Sky map 12h 25m 03.7s, +12° 53′ 13″



Got something to say? Make a comment.
Your name
Your email address