M74 Group

The M74 Group (also known as the NGC 628 Group) is a small group of galaxies in the constellation Pisces. The face-on spiral galaxy M74 (NGC 628) is the brightest galaxy within the group. Other members include the peculiar spiral galaxy NGC 660 and several smaller irregular galaxies .[1][2][3] The M74 Group is one of many galaxy groups that lie within the Virgo Supercluster.[4][5]

M74 Group
Observation data (Epoch J2000)
Constellation(s)Pisces
Right ascension01h 43m [1][2]
Declination+14° 22′[1][2]
Brightest memberMessier 74[2]
Number of galaxies5-7[1][2][3]
Other designations
NGC 628 Group, LGG 29,[1]
NOGG H 94,[2] NOGG P1 84,[2]
NOGG P2 87[2]

Members

The table below lists galaxies that have been consistently identified as group members in the Nearby Galaxies Catalog,[3] the Lyons Groups of Galaxies (LGG) Catalog,[1] and the three group lists created from the Nearby Optical Galaxy sample of Giuricin et al.[2]

Members of the M74 Group
Name Type[6] R.A. (J2000)[6] Dec. (J2000)[6] Redshift (km/s)[6] Apparent Magnitude[6]
Messier 74 SA(s)c 01h 36m 41.8s +15° 47′ 01″ 657 10.0
NGC 660 SB(s)a pec 01h 43m 02.4s +13° 38′ 42″ 850 12.0
UGC 1176 Im 01h 40m 09.9s +15° 54′ 17″ 630 14.4
UGC 1195 Sc 01h 42m 27.0s +13° 58′ 37″ 774 13.9
UGC 1200 IBm 01h 42m 48.3s +13° 09′ 22″ 808 14.0

Other possible members galaxies (galaxies listed in only one or two of the lists from the above references) include the irregular galaxies UGC 891, UGC 1104, UGC 1171, UGC 1175, and UGCA 20.

References
  1. A. Garcia (1993). "General study of group membership. II - Determination of nearby groups". Astronomy and Astrophysics Supplement. 100: 47–90. Bibcode:1993A&AS..100...47G.
  2. G. Giuricin; C. Marinoni; L. Ceriani; A. Pisani (2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". Astrophysical Journal. 543 (1): 178–194. arXiv:astro-ph/0001140. Bibcode:2000ApJ...543..178G. doi:10.1086/317070. S2CID 9618325.
  3. R. B. Tully (1988). Nearby Galaxies Catalog. Cambridge: Cambridge University Press. ISBN 0-521-35299-1.
  4. 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.
  5. Crossen, Craig; Rhemann, Gerald (2012). Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Science & Business Media. p. 239. ISBN 978-3-7091-0626-6.
  6. "NASA/IPAC Extragalactic Database". Results for various galaxies. Retrieved 2006-09-16.


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