NGC 4414, a flocculent spiral galaxy in the Coma I Group
Observation data (Epoch J2000)
Constellation(s)
Coma Berenices & Ursa Major
Right ascension
12h 22m 19.4s[1][2]
Declination
29° 53′ 47″[1][2]
Brightest member
NGC 4725[3]
Number of galaxies
22–34[3][4][2][5][6]
Velocity dispersion
307 km/s[7]
Redshift
0.002418 (724 km/s)[1]
Distance
14.52 Mpc (47.4 Mly)[7]
Binding mass
2.5×1012[3]M☉
X-ray luminosity
1.6×1043 erg/s [8]
Other designations
Coma I Group,[9] NGC 4274 Group,[1] NGC 4062 Group, NGC 4565 Group, NGC 4631 Group, LGG 279, LGG 291, LGG 294[4] NBGG 14-01,[1][5] NBGG 14-02, NBGG 14 -2 +1,[9][5] NGC 4203 Group, NOGG H 611, NOGG P1 631, NOGG P2 642, NOGG P2 641[2]
See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters
The Coma I Group is a group of galaxies[3][1] located about 14.5 Mpc (47.3 Mly)[7] away in the constellation Coma Berenices. The brightest member of the group is NGC 4725. The Coma I Group is rich in spiral galaxies while containing few elliptical and lenticular galaxies. Coma I lies in the foreground of the more distant Coma and Leo clusters and is located within the Virgo Supercluster.[3]
The Coma I Group is currently infalling into the Virgo Cluster and will eventually merge with it.[10]
^ abcdef"Coma I Group". Retrieved 2018-05-12.
^ abcdG. Giuricin; C. Marinoni; L. Ceriani; A. Pisani (2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". Astrophysical Journal. 543 (1): 178–194. arXiv:astro-ph/0001140. Bibcode:2000ApJ...543..178G. doi:10.1086/317070. S2CID 9618325.
^ abcdeGregory, Stephen A.; Thompson, Laird A. (April 1977). "The Coma i Galaxy Cloud". The Astrophysical Journal. 213: 345–350. Bibcode:1977ApJ...213..345G. doi:10.1086/155160. ISSN 0004-637X.
^ abA. Garcia (1993). "General study of group membership. II – Determination of nearby groups". Astronomy and Astrophysics Supplement. 100: 47–90. Bibcode:1993A&AS..100...47G.
^ abcR. B. Tully (1988). Nearby Galaxies Catalog. Cambridge: Cambridge University Press. ISBN 0-521-35299-1.
^P. Fouque; E. Gourgoulhon; P. Chamaraux; G. Paturel (1992). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement. 93: 211–233. Bibcode:1992A&AS...93..211F.
^ abcBoselli, A.; Gavazzi, G. (2009-10-21). "The HI properties of galaxies in the Coma I cloud revisited". Astronomy & Astrophysics. 508 (1): 201–207. arXiv:0909.4140. Bibcode:2009A&A...508..201B. doi:10.1051/0004-6361/200912658. ISSN 0004-6361. S2CID 14049523.
^Garcia-Barreto, J. A.; Downes, D.; Huchtmeier, W. K. (August 1994). "H I deficiency in the Coma I cloud of galaxies" (PDF). Astronomy and Astrophysics. 288: 705–712. Bibcode:1994A&A...288..705G.
^ abCite error: The named reference :4 was invoked but never defined (see the help page).
^Tully, R. B.; Shaya, E. J. (June 1984). "Infall of galaxies into the Virgo cluster and some cosmological constraints". The Astrophysical Journal. 281: 31–55. Bibcode:1984ApJ...281...31T. doi:10.1086/162073. ISSN 0004-637X.
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