NGC 5866 Group

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NGC 5866 Group
Ngc5866 hst big.png
NGC 5866, one of the brightest galaxies in the NGC 5866 Group.
Observation data (Epoch J2000)
Constellation(s) Draco
Right ascension 15h 12m [1] [2]
Declination +56° 26′ [1] [2]
Brightest member NGC 5907 [1] [2]
Number of galaxies3-7 [1] [2] [3]
Other designations
NGC 5907 Group, LGG 396, [1] NOGG H 836, [2]
NOGG P1 841, [2] NOGG P2 856 [2]
See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters

The NGC 5866 Group is a small group of galaxies located in the constellation Draco. The group is named after NGC 5866, the galaxy with the highest apparent magnitude in the group, although some galaxy group catalogs list NGC 5907 as the brightest member. [1] [2]

Contents

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 NGC 5866 Group
Name Type [4] R.A. (J2000) [4] Dec. (J2000) [4] Redshift (km/s) [4] Apparent Magnitude [4]
NGC 5866 S015h 06m 29.5s+55° 45′ 48″672 ± 910.7
NGC 5879 SA(rs)bc15h 09m 46.8s+57° 00′ 01″772 ± 512.4
NGC 5907 SA(s)c15h 15m 53.8s+56° 19′ 44″667 ± 311.1

Other possible members galaxies (galaxies listed in only one or two of the lists from the above references) include NGC 5866B, NGC 5963, UGC 9776, and UGC 9816.

Nearby groups

The NGC 5866 Group is located to the northwest of both the M101 Group (which contains the Pinwheel Galaxy (M101) and its companion galaxies) and the M51 Group (which contains the Whirlpool Galaxy (M51), the Sunflower Galaxy (M63), and several other galaxies). [5] The distances to these three groups (as determined from the distances to the individual member galaxies) are similar, which suggests that the M51 Group, the M101 Group, and the NGC 5866 Group are actually part of a large, loose, elongated structure. [5] However, most group identification methods (including those used by the references cited above) identify these three groups as separate entities.

See also

Related Research Articles

<span class="mw-page-title-main">NGC 5866</span> Galaxy in the constellation Draco

NGC 5866 is a relatively bright lenticular galaxy in the constellation Draco. NGC 5866 was most likely discovered by Pierre Méchain or Charles Messier in 1781, and independently found by William Herschel in 1788. Measured orbital velocities of its globular cluster system imply that dark matter makes up only 34±45% of the mass within 5 effective radii, a notable paucity.

<span class="mw-page-title-main">Leo Triplet</span> Group of galaxies in the constellation Leo

The Leo Triplet is a small group of galaxies about 35 million light-years away in the constellation Leo. This galaxy group consists of the spiral galaxies M65, M66, and NGC 3628.

<span class="mw-page-title-main">Messier 109</span> Galaxy in the constellation Ursa Major

Messier 109 is a barred spiral galaxy exhibiting a weak inner ring structure around the central bar approximately 67.2 ± 23 million light-years away in the northern constellation Ursa Major. M109 can be seen south-east of the star Phecda.

<span class="mw-page-title-main">M101 Group</span> Loose group of galaxies in the constellation Ursa Major

The M101 Group is a loose group of galaxies located in the constellation Ursa Major. The group is named after the brightest galaxy in the group, the Pinwheel Galaxy (M101). Most of the other members of the group are companions of the Pinwheel Galaxy. The group itself is one of many located within the Virgo Supercluster.

<span class="mw-page-title-main">NGC 3877</span> Galaxy in the constellation Ursa Major

NGC 3877 is a type Sc spiral galaxy that was discovered by William Herschel on February 5, 1788. It is located below the magnitude 3.7 star Chi Ursae Majoris in Ursa Major.

<span class="mw-page-title-main">NGC 3949</span> Spiral galaxy in the constellation Ursa Major

NGC 3949 is an unbarred spiral galaxy in the constellation Ursa Major. It is believed to be approximately 50 million light-years away from the Earth. NGC 3949 is a member of the M109 Group, a group of galaxies located in the constellation Ursa Major that may contain over 50 galaxies. The brightest galaxy in the group is the spiral galaxy M109.

<span class="mw-page-title-main">NGC 4038 Group</span> Galaxy group in the constellations Corvus and Crater

The NGC 4038 Group is a group of galaxies in the constellations Corvus and Crater. The group may contain between 13 and 27 galaxies. The group's best known galaxies are the Antennae Galaxies, a well-known interacting pair of galaxies.

The M94 Group is a loose, extended group of galaxies located about 13 million light-years away in the constellations Canes Venatici and Coma Berenices. The group is one of many groups that lies within the Virgo Supercluster and one of the closest groups to the Local Group.

The M74 Group is a small group of galaxies in the constellation Pisces. The face-on spiral galaxy M74 is the brightest galaxy within the group. Other members include the peculiar spiral galaxy NGC 660 and several smaller irregular galaxies . The M74 Group is one of many galaxy groups that lie within the Virgo Supercluster.

<span class="mw-page-title-main">M109 Group</span> Galaxy group in the constellation Ursa Major

The M109 Group is a group of galaxies about 55 million light-years away in the constellation Ursa Major. The group is named after the brightest galaxy within the group, the spiral galaxy M109.

The NGC 4631 Group is a poorly defined group of galaxies, about 25 million light-years from Earth in the Coma Berenices and Canes Venatici constellations.

<span class="mw-page-title-main">NGC 3384</span> Galaxy in the constellation Leo

NGC 3384 is an elliptical galaxy in the constellation Leo. The galaxy was discovered by William Herschel in 1784 as part of the Herschel 400 Catalogue. The high age of the stars in the central region of NGC 3384 was confirmed after analysis of their color. More than 80% were found to be Population II stars which are over a billion years old. The supermassive black hole at the core has a mass of 1.6+0.1
−0.2×107 M☉.

<span class="mw-page-title-main">M51 Group</span> Galaxy cluster in constellation Canes Venatici

The M51 Group is a group of galaxies located in Canes Venatici. The group is named after the brightest galaxy in the group, the Whirlpool Galaxy (M51A). Other notable members include the companion galaxy to the Whirlpool Galaxy (M51B) and the Sunflower Galaxy (M63).

<span class="mw-page-title-main">M96 Group</span> Galaxy group in the constellation Leo

The M96 Group is a group of galaxies in the constellation Leo. This group contains between 8 and 24 galaxies, including three Messier objects. It also contains the Leo Ring. The group is one of many groups that lies within the Virgo Supercluster.

<span class="mw-page-title-main">Coma I</span> Galaxy cluster in constellation Coma Berenices

The Coma I Group is a group of galaxies located about 14.5 Mpc (47.3 Mly) 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.

<span class="mw-page-title-main">NGC 3981</span> Spiral galaxy in the constellation Crater

NGC 3981 is an unbarred spiral galaxy located 62 million light-years away in the constellation of Crater. It was discovered on February 7, 1785 by William Herschel.

<span class="mw-page-title-main">NGC 668</span> Galaxy in constellation Andromeda

NGC 668 is a spiral galaxy located 200 million light-years away in the constellation Andromeda. It was discovered by astronomer Édouard Stephan on December 4, 1880 and is a member of Abell 262.

<span class="mw-page-title-main">NGC 687</span> Galaxy in constellation Andromeda

NGC 687 is a lenticular galaxy located 220 million light-years away in the constellation Andromeda. It was discovered by astronomer William Herschel on September 21, 1786 and is a member of Abell 262.

<span class="mw-page-title-main">NGC 703</span> Galaxy in the constellation Andromeda

NGC 703 is a lenticular galaxy located 240 million light-years away in the constellation Andromeda. The galaxy was discovered by astronomer William Herschel on September 21, 1786 and is also a member of Abell 262.

<span class="mw-page-title-main">NGC 712</span> Galaxy in constellation Andromeda

NGC 712 is a lenticular galaxy located 230 million light-years away in the constellation Andromeda. It was discovered by astronomer John Herschel in October 1828 and is a member of Abell 262.

References

  1. 1 2 3 4 5 6 7 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. 1 2 3 4 5 6 7 8 9 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. 1 2 R. B. Tully (1988). Nearby Galaxies Catalog. Cambridge: Cambridge University Press. ISBN   0-521-35299-1.
  4. 1 2 3 4 5 "NASA/IPAC Extragalactic Database". Results for various galaxies. Retrieved 2006-10-17.
  5. 1 2 L. Ferrarese; H. C. Ford; J. Huchra; R. C. Kennicutt Jr.; et al. (2000). "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". Astrophysical Journal Supplement. 128 (2): 431–459. arXiv: astro-ph/9910501 . Bibcode:2000ApJS..128..431F. doi:10.1086/313391. S2CID   121612286.

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