[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki41\/coma-i-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki41\/coma-i-wikipedia\/","headline":"Coma I – Wikipedia","name":"Coma I – Wikipedia","description":"before-content-x4 From Wikipedia, the free encyclopedia after-content-x4 Galaxy cluster in constellation Coma Berenices Coma I Group Constellation(s) Coma Berenices &","datePublished":"2022-09-11","dateModified":"2022-09-11","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki41\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki41\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/c\/c3\/NGC_4414_%28NASA-med%29.jpg\/300px-NGC_4414_%28NASA-med%29.jpg","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/c\/c3\/NGC_4414_%28NASA-med%29.jpg\/300px-NGC_4414_%28NASA-med%29.jpg","height":"248","width":"300"},"url":"https:\/\/wiki.edu.vn\/en\/wiki41\/coma-i-wikipedia\/","wordCount":5790,"articleBody":"     (adsbygoogle = window.adsbygoogle || []).push({});before-content-x4From Wikipedia, the free encyclopedia       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Galaxy cluster in constellation Coma BerenicesComa I GroupConstellation(s)Coma Berenices & Ursa MajorRight ascension12h 22m 19.4s[1][2]Declination29\u00b0\u00a053\u2032\u00a047\u2033[1][2]Brightest memberNGC 4725[3]Number of galaxies22\u201334[3][4][2][5][6]Velocity dispersion307 km\/s[7]Redshift0.002418 (724 km\/s)[1]Distance14.52\u00a0Mpc (47.4\u00a0Mly)[7]Binding mass2.5\u00d71012[3]\u00a0M\u2609X-ray luminosity1.6\u00d71043 erg\/s [8]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 clustersThe Coma I Group is a group of galaxies[3][1] located about 14.5\u00a0Mpc (47.3\u00a0Mly)[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]       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4The Coma I Group is currently infalling into the Virgo Cluster and will eventually merge with it.[10]Table of ContentsStructure[edit]Members[edit]Nearby groups[edit]See also[edit]References[edit]Structure[edit]The Coma I Group appears to consist of two main subgroups, a denser subgroup centered on NGC 4274[11] and NGC 4278, and looser one surrounding NGC 4565 as suggested by De Vaucouleurs.[12]  However, Gregory and Thompson (1977) found no clear evidence for two distinct subgroups in Coma I. They noted a slight density enhancement around NGC 4274 with the rest of the members of Coma I uniformly distributed to the southeast of this density enhancement. They also noted a central bar-like structure with a minor axis of 0.9\u00a0Mpc (2.9\u00a0Mly) and a major axis of 2.3\u00a0Mpc (7.5\u00a0Mly).[3] P. Fouque et al. and A. M. Garcia et al. both list the Coma I group consisting of two subgroups centered on NGC 4274 and NGC 4565.[6][4] Additionally, Gibson et al. suggests that another association, the Coma II Group  which is centered on NGC 4725 is associated with the Coma I Group.[9] In 2000, Ferrarese et al. defined the Coma II Group as containing 5 galaxies, namely NGC 4494, NGC 4562, NGC 4565, NGC 4725, and NGC 4747. Also, it was found that these 5 galaxies which make up the Coma II Group have radial velocities in the narrow range of 1190 to 1395 km\/s which is larger than the range of galaxies that are part of the Coma I group which have ranges of 600 to 1000 km\/s.[13]       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4The nearby NGC 4631 Group is sometimes listed in some catalogs as being part of the Coma I Group,[4][2][14] while other catalogs list the group as being separate from the Coma I Group.[5][6]Members[edit]The table below lists galaxies that have been commonly and consistently identified as group members in the Nearby Galaxies Catalog,[5] the survey of Fouque et al.,[6] the Lyons Groups of Galaxies (LGG) Catalog,[4] and the three group lists created from the Nearby Optical Galaxy sample of Giuricin et al.[2]Members of the Coma I Group NameType[15]R.A. (J2000)[15]Dec. (J2000)[15]Redshift (km\/s)[15]Apparent Magnitude[15]NGC 4020SBd?11h 58m 56.7s+30\u00b0\u00a024\u2032\u00a043\u203376013.1NGC 4062SA(s)c12h 04m 03.8s+31\u00b0\u00a053\u2032\u00a045\u203375812.5NGC 4136SAB(r)c12h 09m 17.7s+29\u00b0\u00a055\u2032\u00a039\u203360911.69NGC 4173SBd12h 12m 21.4s+29\u00b0\u00a012\u2032\u00a025\u2033112713.59NGC 4203SAB0^-?12h 15m 05.0s+33\u00b0\u00a011\u2032\u00a050\u2033108611.8NGC 4245SB0\/a?(r)12h 17m 36.8s+29\u00b0\u00a036\u2032\u00a029\u203388412.31NGC 4251SB0?12h 18m 08.2s+28\u00b0\u00a010\u2032\u00a031\u2033106611.58NGC 4274(R)SB(r)ab12h 19m 50.6s+29\u00b0\u00a036\u2032\u00a052\u203393011.34NGC 4278E1-212h 20m 06.8s+29\u00b0\u00a016\u2032\u00a051\u203362011.20NGC 4283E012h 20m 20.8s+29\u00b0\u00a018\u2032\u00a039\u2033105613.10NGC 4310 (NGC 4338)(R’)SAB0^+(r)?12h 22m 26.3s+29\u00b0\u00a012\u2032\u00a033\u203391313.22NGC 4314SB(rs)a12h 22m 31.8s+29\u00b0\u00a053\u2032\u00a045\u203396311.43NGC 4359SB(rs)c?12h 24m 11.2s+31\u00b0\u00a031\u2032\u00a019\u2033125313.6NGC 4393SABd12h 25m 51.2s+27\u00b0\u00a033\u2032\u00a042\u203375512.7NGC 4414SA(rs)c?12h 26m 27.1s+31\u00b0\u00a013\u2032\u00a025\u203371610.96NGC 4448SB(r)ab12h 28m 15.4s+28\u00b0\u00a037\u2032\u00a013\u203366112.00NGC 4494E1-212h 31m 24.1s+25\u00b0\u00a046\u2032\u00a031\u2033134210.71NGC 4525Scd?12h 33m 51.1s+30\u00b0\u00a016\u2032\u00a039\u2033117213.4NGC 4559SAB(rs)cd12h 35m 57.6s+27\u00b0\u00a057\u2032\u00a036\u203380710.46NGC 4562SB(s)dm?12h 35m 34.8s+25\u00b0\u00a051\u2032\u00a000\u2033135313.9NGC 4565SA(s)b?12h 36m 20.8s+25\u00b0\u00a059\u2032\u00a016\u2033123010.42NGC 4725SAB(r)ab pec12h 50m 26.6s+25\u00b0\u00a030\u2032\u00a003\u2033120610.11NGC 4747SBcd? pec12h 51m 45.9s+25\u00b0\u00a046\u2032\u00a037\u2033119012.96Other possible member galaxies (galaxies listed in only one or two of the lists from the above references) include IC 3215, IC 3247, MCG 5-29- 66, NGC 4080,  NGC 4150, NGC 4308, NGC 4455, NGC 4509, NGC 4534, NGC 4627, NGC 4631, NGC 4656, NGC 4670, UGC 6900, UGC 7007, UGC 7300, UGC 7428, UGC 7438, UGC 7673, UGC 7916 and UGCA 294.Nearby groups[edit]The center of the Virgo Cluster (M87) lies about 3.6\u00a0Mpc (11.7\u00a0Mly) from the Coma I Group.[3]See also[edit]References[edit]^ a b c d e f “Coma I Group”. Retrieved 2018-05-12.^ a b c d e f G. Giuricin; C. Marinoni; L. Ceriani; A. Pisani (2000). “Nearby Optical Galaxies: Selection of the Sample and Identification of Groups”. Astrophysical Journal. 543 (1): 178\u2013194. arXiv:astro-ph\/0001140. Bibcode:2000ApJ…543..178G. doi:10.1086\/317070. S2CID\u00a09618325.^ a b c d e f g Gregory, Stephen A.; Thompson, Laird A. (April 1977). “The Coma i Galaxy Cloud”. The Astrophysical Journal. 213: 345\u2013350. Bibcode:1977ApJ…213..345G. doi:10.1086\/155160. ISSN\u00a00004-637X.^ a b c d e A. Garcia (1993). “General study of group membership. II \u2013 Determination of nearby groups”. Astronomy and Astrophysics Supplement. 100: 47\u201390. Bibcode:1993A&AS..100…47G.^ a b c d e R. B. Tully (1988). Nearby Galaxies Catalog. Cambridge: Cambridge University Press. ISBN\u00a00-521-35299-1.^ a b c d 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\u2013233. Bibcode:1992A&AS…93..211F.^ a b c Boselli, A.; Gavazzi, G. (2009-10-21). “The HI properties of galaxies in the Coma I cloud revisited”. Astronomy & Astrophysics. 508 (1): 201\u2013207. arXiv:0909.4140. Bibcode:2009A&A…508..201B. doi:10.1051\/0004-6361\/200912658. ISSN\u00a00004-6361. S2CID\u00a014049523.^ 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\u2013712. Bibcode:1994A&A…288..705G.^ a b c Gibson, Brad K.; Hughes, Shaun M. G.; Stetson, Peter B.; Freedman, Wendy L.; Robert C. Kennicutt, Jr.; Mould, Jeremy R.; Bresolin, Fabio; Ferrarese, Laura; Ford, Holland C. (1999). “The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XVII. The Cepheid Distance to NGC 4725”. The Astrophysical Journal. 512 (1): 48. arXiv:astro-ph\/9810003. Bibcode:1999ApJ…512…48G. doi:10.1086\/306762. ISSN\u00a00004-637X. S2CID\u00a0117635398.^ Tully, R. B.; Shaya, E. J. (June 1984). “Infall of galaxies into the Virgo cluster and some cosmological constraints”. The Astrophysical Journal. 281: 31\u201355. Bibcode:1984ApJ…281…31T. doi:10.1086\/162073. ISSN\u00a00004-637X.^ “Nearby Groups of Galaxies”. ned.ipac.caltech.edu. Retrieved 2018-05-19.^ Forbes, Duncan A. (October 1996). “Globular Cluster Luminosity Functions and the Hubble Constant From WFPC Imaging: Galaxies in the Coma I Cloud”. The Astronomical Journal. 112: 1409. arXiv:astro-ph\/9611139. Bibcode:1996AJ….112.1409F. doi:10.1086\/118108. ISSN\u00a00004-6256. S2CID\u00a0118922735.^ Ferrarese, Laura; Ford, Holland C.; Huchra, John; Kennicutt, Robert C., Jr.; Mould, Jeremy R.; Sakai, Shoko; Freedman, Wendy L.; Stetson, Peter B.; Madore, Barry F.; Gibson, Brad K.; Graham, John A. (2000-06-01). “A Database of Cepheid Distance Moduli and Tip of the Red Giant Branch, Globular Cluster Luminosity Function, Planetary Nebula Luminosity Function, and Surface Brightness Fluctuation Data Useful for Distance Determinations”. The Astrophysical Journal Supplement Series. 128 (2): 431\u2013459. arXiv:astro-ph\/9910501. Bibcode:2000ApJS..128..431F. doi:10.1086\/313391. ISSN\u00a00067-0049. S2CID\u00a0121612286.^ Makarov, Dmitry; Karachentsev, Igor (2010-11-29). “Galaxy groups and clouds in the Local (z~0.01) universe”. Monthly Notices of the Royal Astronomical Society. 412 (4): 2498\u20132520. arXiv:1011.6277v1. Bibcode:2011MNRAS.412.2498M. doi:10.1111\/j.1365-2966.2010.18071.x. S2CID\u00a0119194025.^ a b c d e “NASA\/IPAC Extragalactic Database”. Results for various galaxies. Retrieved 2006-10-15.     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