# M96 Group

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{{short description|Galaxy group in the constellation Leo}}
{{redirect|Leo Group|the company|The Leo Group|the cluster of galaxies|Leo Cluster|the galaxy triplet|Leo Triplet}}
{{sky|10|48|34.7|+|12|40|15|37000000}}
{{Galaxy cluster
| name = M96 Group
| image = 350px
|caption = [M95](/source/Messier_95) (left) and [M96](/source/Messier_96) (right).  Credit:Scott Anttila.
| constellation = [Leo](/source/Leo_(constellation))<ref name="garcia1993">{{cite journal
  | author=A. Garcia
  | title=General study of group membership. II - Determination of nearby groups
  | journal=[Astronomy and Astrophysics Supplement](/source/Astronomy_and_Astrophysics_Supplement)
  | date=1993
  | volume=100
  | pages=47–90
  | bibcode=1993A&AS..100...47G}}</ref><ref name="giuricinetal2002">{{cite journal
  |author1=G. Giuricin |author2=C. Marinoni |author3=L. Ceriani |author4=A. Pisani | title=Nearby Optical Galaxies: Selection of the Sample and Identification of Groups
  | journal=[Astrophysical Journal](/source/Astrophysical_Journal)
  | date=2000
  | volume=543
  | issue=1
  | pages=178–194
  | bibcode=2000ApJ...543..178G
  | doi=10.1086/317070|arxiv = astro-ph/0001140 |s2cid=9618325 }}</ref>
| epoch=[J2000](/source/J2000)<ref name="ned-M96Group">
{{cite web
  | publisher=NASA/IPAC Extragalactic Database
  | title=MESSIER 096 GROUP
  | url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=Leo+Group&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES
  | accessdate=2015-11-05}}</ref><ref name="simbad-M96Group">
{{cite simbad
  | title=NAME M96 GROUP
  | accessdate=2015-10-24}}</ref>
| ra = {{RA|10|48|34.7}} <ref name="ned-M96Group"/>
| dec= {{DEC|+12|40|15}} <ref name="ned-M96Group"/>
| distance= {{convert|11.3|Mpc|Mly|abbr=on|lk=on}} <ref name="ned-M96Group"/>
| member_no = 8-24<ref name="garcia1993" /><ref name="giuricinetal2002" /><ref name="nbg" /><ref name="fouqueetal1992" /> 
| brightest_member = [M96](/source/Messier_96)<ref name="garcia1993" /><ref name="giuricinetal2002" />
| other_names = Leo I Group,<ref name="fouqueetal1992" /> [LGG](/source/Lyons_Groups_of_Galaxies) 217,<ref name="garcia1993" /> NOGG H 507,<ref name="giuricinetal2002" /><br />NOGG P1 498,<ref name="giuricinetal2002" /> NOGG P2 507<ref name="giuricinetal2002" />
}}

The '''M96 Group''' (also known as the '''Leo I Group''') is a [group of galaxies](/source/group_of_galaxies) in the [constellation](/source/constellation) [Leo](/source/Leo_(constellation)).  This group contains between 8 and 24 galaxies, including three [Messier object](/source/Messier_object)s.<ref name="garcia1993" /><ref name="giuricinetal2002" /><ref name="nbg">{{cite book 
  | author=R. B. Tully
  | date=1988
  | title=Nearby Galaxies Catalog
  | edition= 
  | publisher=[Cambridge University Press](/source/Cambridge_University_Press)
  | location=Cambridge
  | isbn=0-521-35299-1}}</ref><ref name="fouqueetal1992">{{cite journal
  |author1=P. Fouque |author2=E. Gourgoulhon |author3=P. Chamaraux |author4=G. Paturel | title=Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members
  | journal=Astronomy and Astrophysics Supplement
  | date=1992
  | volume=93
  | pages=211–233
  | bibcode=1992A&AS...93..211F}}</ref> It also contains the [Leo Ring](/source/Leo_Ring). The group is one of many groups that lies within the [Virgo Supercluster](/source/Virgo_Supercluster) (the combined [Local Group](/source/Local_Group) and [Virgo Cluster](/source/Virgo_Cluster)).<ref name="tully1982">{{cite journal
  | author= R. B. Tully
  | title=The Local Supercluster
  | journal=Astrophysical Journal
  | date=1982
  | volume=257
  | pages=389–422
  | bibcode=1982ApJ...257..389T
  | doi=10.1086/159999| doi-access=free
  }}</ref>

==Members==

The table below lists galaxies that have been consistently identified as group members in the [Nearby Galaxies Catalog](/source/Nearby_Galaxies_Catalog),<ref name="nbg" /> the survey of Fouque et al.,<ref name="fouqueetal1992" /> the [Lyons Groups of Galaxies](/source/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;"
|+'''Members of the M96 Group'''
|-
! Name
! [Type](/source/Galaxy_morphological_classification)<ref name="ned">{{cite web
  | title=NASA/IPAC Extragalactic Database
  | work=Results for various galaxies
  | url=http://nedwww.ipac.caltech.edu/
  | accessdate=2006-10-24}}</ref><ref name="simbad">
{{cite web
  | title=SIMBAD
  | url=http://simbad.u-strasbg.fr
  | accessdate=2015-10-24}}</ref>
! [R.A.](/source/Right_Ascension) ([J2000](/source/J2000))<ref name="ned" /><ref name="simbad" />
! [Dec.](/source/Declination) ([J2000](/source/J2000))<ref name="ned" /><ref name="simbad" />
! [Redshift](/source/Redshift) ([km](/source/kilometer)/[s](/source/second))<ref name="ned" /><ref name="simbad" />
! [Apparent Magnitude](/source/Apparent_Magnitude)<ref name="ned" /><ref name="simbad" />
|- 
| [M95](/source/Messier_95)
| SB(r)b
| {{RA|10|43|57.7}}
| {{DEC|+11|42|14}}
| 778 ± 4
| 11.4
|-
| [M96](/source/Messier_96)
| SAB(rs)ab
| {{RA|10|46|45.7}}
| {{DEC|+11|49|12}}
| 897 ± 4
| 10.1
|-
| [M105](/source/Messier_105)
| E1
| {{RA|10|47|49.6}}
| {{DEC|+12|34|54}}
| 911 ± 2
| 10.2
|-
| [NGC 3299](/source/NGC_3299)
| SAB(s)dm
| {{RA|10|36|23.8}}
| {{DEC|+12|42|27}}
| 641 ± 6
| 13.3
|-
| [NGC 3377](/source/NGC_3377)
| E5.5
| {{RA|10|47|42.4|}}
| {{DEC|+13|59|08}}
| 665 ± 2
| 11.2
|-
| [NGC 3384](/source/NGC_3384)
| E7
| {{RA|10|48|16.9}}
| {{DEC|+12|37|46}}
| 704 ± 2
| 10.9
|-
| [NGC 3412](/source/NGC_3412)
| SB(s)0
| {{RA|10|50|53.3}}
| {{DEC|+13|24|44}}
| 841 ± 2
| 11.5
|-
| [NGC 3489](/source/NGC_3489)
| SAB(rs)0
| {{RA|11|00|18.6}}
| {{DEC|+13|54|04}}
| 677 ± 2
| 11.1
|-
| [Leo Ring](/source/Leo_Ring)
| H I region
| {{RA|10|48|19.0}}
| {{DEC|+12|41|21}}
| 960 ± 80
|
|-
|}

==Nearby groups==

The [Leo Triplet](/source/Leo_Triplet), which includes the spiral galaxies [M65](/source/Messier_65), [M66](/source/Messier_66), and [NGC 3628](/source/NGC_3628),<ref name="garcia1993" /><ref name="giuricinetal2002" /><ref name="nbg" />  is located physically near the M96 Group.<ref name="ferrareseetal00">{{cite journal
  |author1=L. Ferrarese |author2=H. C. Ford |author3=J. Huchra |author4=R. C. Kennicutt Jr. |author5=J. R. Mould |author6=S. Sakai |author7=W. L. Freedman |author8=P. B. Stetson |author9=B. F. Madore |author10=B. K. Gibson |author11=J. A. Graham |author12=S. M. Hughes |author13=G. D. Illingworth |author14=D. D. Kelson |author15=L. Macri |author16=K. Sebo |author17=N. A. Silbermann | title=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
  | journal=Astrophysical Journal Supplement
  | date=2000
  | volume=128
  | issue=2
  | pages=431–459
  | bibcode=2000ApJS..128..431F
  | doi=10.1086/313391|arxiv = astro-ph/9910501 |s2cid=121612286 }}</ref>  Some group identification algorithms actually identify the Leo Triplet at part of the M96 Group.<ref name="giuricinetal2002" /><ref name="fouqueetal1992" />  The two groups may actually be separate parts of a much larger group.<ref name="ferrareseetal00" />

[[File:A galactic maelstrom.jpg|thumb|M96 Group also includes the bright galaxies [Messier 105](/source/Messier_105) and [Messier 95](/source/Messier_95).<ref>{{cite web|title=A galactic maelstrom|url=http://www.spacetelescope.org/images/potw1535a/|accessdate=31 August 2015}}</ref>]]

==See also==
*[Leo II Groups](/source/Leo_II_Groups)
*[Virgo II Groups](/source/Virgo_II_Groups)
*[Virgo III Groups](/source/Virgo_III_Groups)

==References==

{{Reflist}}

==External links==
* [http://www.beskeen.com/gallery/galaxy/m95m96m105.shtml Leo I Galaxy Group]

Category:M96 Group
Category:Leo (constellation)

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Adapted from the Wikipedia article [M96 Group](https://en.wikipedia.org/wiki/M96_Group) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/M96_Group?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.