M94 Group 4194905 218786070 2008-06-12T04:17:35Z Alexbot 5517884 robot Modifying: [[fr:Nuage des Chiens de Chasse]] {{Galaxy cluster | name = M94 Group | image = [[Image:Spiral Galaxy M94.jpg|350px]] |caption = Messier 94, the brightest galaxy in the M94 Group. | epoch=[[J2000]] | ra =<ref name="garcia1993">{{cite journal | author=A. Garcia | title=General study of group membership. II - Determination of nearby groups | journal=Astronomy and Astrophysics Supplement | year=1993 | volume=100 | pages=47–90 | url=http://adsabs.harvard.edu/abs/1993A&AS..100...47G}}</ref><ref name="giuricinetal2002">{{cite journal | author=G. Giuricin, C. Marinoni, L. Ceriani, A. Pisani | title=Nearby Optical Galaxies: Selection of the Sample and Identification of Groups | journal=Astrophysical Journal | year=2000 | volume=543 | pages=178–194 | url=http://adsabs.harvard.edu/abs/2000ApJ...543..178G | doi=10.1086/317070}}</ref> | dec=<ref name="garcia1993" /><ref name="giuricinetal2002" /> | constellation = [[Canes Venatici]] & [[Coma Berenices]] | member_no = 16-24<ref name="nbg">{{cite book | author=R. B. Tully | year=1988 | title=Nearby Galaxies Catalog | edition= | publisher=Cambridge University Press | location=Cambridge | id=ISBN 0-521-35299-1}}</ref><ref name="garcia1993" /><ref name="giuricinetal2002" /> | brightest_member = [[Messier 94|M94]],<ref name="giuricinetal2002" /> [[Messier 106|M106]],<ref name="garcia1993" /> | other_names = [[New General Catalogue|NGC]] 4736 Group,<ref name="simbad">{{cite web | title=SIMBAD Astronomical Database | work=Results for NGC 4736 Group | url=http://simbad.u-strasbg.fr/Simbad/ | accessdate=2006-10-30}}</ref> Canes Venatici I Group,<ref name="simbad" /><br />Canes Venatici Cloud,<ref name="simbad" /><br />LGG 290,<ref name="garcia1993" /> NOGG H 617,<ref name="giuricinetal2002" /><br />NOGG P1 636,<ref name="giuricinetal2002" /> NOGG P2 647<ref name="giuricinetal2002" />}} The '''M94 Group''' (also kown as '''Canes Venatici I Group''' or the '''Canes Venatici Cloud''') is a loose, extended [[group of galaxies]] located about 13 million [[light-year]]s away<ref name="karachentsev2005">{{cite journal | author=I. D. Karachentsev | title=The Local Group and Other Neighboring Galaxy Groups | journal=Astronomical Journal | year=2005 | volume=129 | pages=178–188 | url=http://adsabs.harvard.edu/abs/2005AJ....129..178K | doi=10.1086/426368}}</ref> in the [[constellation]]s [[Canes Venatici]] and [[Coma Berenices]]. The group is one of many groups that lies within the [[Virgo Supercluster]] (i.e. the [[Local Supercluster]])<ref name="tully1982">{{cite journal | author= R. B. Tully | title=The Local Supercluster | journal=Astrophysical Journal | year=1982 | volume=257 | pages=389–422 | url=http://adsabs.harvard.edu/abs/1982ApJ...257..389T | doi=10.1086/159999}}</ref>. Although the galaxies in this cluster appear to be form a single large cloud-like structure, many of the galaxies within the group are only weakly gravitationally bound, and some have not yet formed stable orbits around the center of this group. Instead, most of the galaxies in this group appears to be moving with the expansion of the universe<ref name="karachentsevetal2003">{{cite journal | author=I. D. Karachentsev, M. E. Sharina, A. E. Dolphin, E. K. Grebel, D. Geisler, P. Guhathakurta, P. W. Hodge, V. E. Karachentseva, A. Sarajedini, P. Seitzer | title=Galaxy flow in the Canes Venatici I cloud | journal=Astronomy and Astrophysics | year=2003 | volume=398 | pages=467–477 | url=http://adsabs.harvard.edu/abs/2003A&A...398..467K | doi=10.1051/0004-6361:20021598}}</ref><ref name="karachentsev2005" />. ==Members== The table below lists galaxies that have been consistently identified as group members in the Nearby Galaxies Catalog<ref name="nbg" />, the Lyons Groups of Galaxies (LGG) Catalog<ref name="garcia1993" />, and the three group lists created from the Nearby Optical Galaxy sample of Giuricin et al.<ref name="giuricinetal2002" />. {{clear}} {| class="wikitable" style="text-align:center;border-collapse:collapse;" cellpadding="2" |+'''Members of the M94 Group''' |- ! style="background:#efefef;" | Name ! style="background:#efefef;" | [[Galaxy morphological classification|Type]]<ref name="ned">{{cite web | title=NASA/IPAC Extragalactic Database | work=Results for various galaxies | url=http://nedwww.ipac.caltech.edu/ | accessdate=2006-11-06}}</ref> ! style="background:#efefef;" | [[Right Ascension|R.A.]] ([[J2000]])<ref name="ned" /> ! style="background:#efefef;" | [[Declination|Dec.]] ([[J2000]])<ref name="ned" /> ! style="background:#efefef;" | [[Redshift]] ([[kilometer|km]]/[[second|s]])<ref name="ned" /> ! style="background:#efefef;" | [[Apparent Magnitude]]<ref name="ned" /> |- | [[IC 3687]] | IAB(s)m | {{RA|12|42|15.1}} | {{DEC|+38|30|12}} | 354 ± 1 | 13.7 |- | [[IC 4182]] | SA(s)m | {{RA|13|05|49.5}} | {{DEC|+37|36|18}} | 321 ± 1 | 13.0 |- | [[Messier 94|M94]] | (R)SA(r)ab | {{RA|12|50|53.0}} | {{DEC|+41|07|14}} | 308 ± 1 | 9.0 |- | [[NGC 4144]] | SAB(s)cd | {{RA|12|09|58.6}} | {{DEC|+46|27|26}} | 265 ± 1 | 12.1 |- | [[NGC 4190]] | Im pec | {{RA|12|13|44.8}} | {{DEC|+36|38|03}} | 228 ± 1 | 13.4 |- | [[NGC 4214]] | IAB(s)m | {{RA|12|15|39.2}} | {{DEC|+36|19|37}} | 291 ± 3 | 10.2 |- | [[NGC 4244]] | SA(s)cd | {{RA|12|17|29.6}} | {{DEC|+37|48|26}} | 244 ± 0 | 10.9 |- | [[NGC 4395]] | SA(s)m | {{RA|12|25|48.9}} | {{DEC|+33|32|48}} | 319 ± 1 | 10.6 |- | [[NGC 4449]] | IBm | {{RA|12|28|11.9}} | {{DEC|+44|05|40}} | 207 ± 4 | 10.0 |- | [[UGC 6817]] | Im | {{RA|11|50|53.0}} | {{DEC|+38|52|49}} | 242 ± 1 | 13.4 |- | [[UGC 7559]] | IBm | {{RA|12|27|05.2}} | {{DEC|+37|08|33}} | 218 ± 5 | 14.2 |- | [[UGC 7577]] | Im | {{RA|12|27|40.9}} | {{DEC|+43|29|44}} | 195 ± 0 | 12.8 |- | [[UGC 7698]] | Im | {{RA|12|32|54.4}} | {{DEC|+31|32|28}} | 331 ± 1 | 13.0 |- | [[UGC 8320]] | IBm | {{RA|13|14|27.9}} | {{DEC|+45|55|09}} | 192 ± 1 | 12.7 |- |} Additionally, [[NGC 4105]] and [[UGC 8331]] are frequently but not consistently identified as members of this group in the references cited above. The brightest member in this galaxy group is questionable and partly depends on the analysis used to determine group members. The LGG Catalog identifies [[Messier 106|M106]] as part of this group, which would make it the brightest galaxy within the group.<ref name="garcia1993" /> However, the other catalogs cited above do not identify M106 as a group member, in which case [[Messier 94|M94]] would be the brightest galaxy within the group<ref name="nbg" /><ref name="giuricinetal2002" />. ==See also== * [[M96 Group]] - ''another group of galaxies that is similar in size to this one'' * [[Sculptor Group]] - ''another nearby group of galaxies that is also weakly gravitationally bound'' ==References== {{reflist}} [[Category:Galaxy clusters]] [[Category:M94 Group| ]] [[Category:Canes Venatici constellation]] [[Category:Coma Berenices constellation]] [[fr:Nuage des Chiens de Chasse]] [[nl:Canes Venaticiwolk]] [[zh:M94星系團]]