Hercules Cluster

The Hercules Cluster (Abell 2151) is a cluster of about 200 galaxies[4] some 500 million light-years distant in the constellation Hercules. It is rich in spiral galaxies and shows many interacting galaxies.[5] The cluster is part of the larger Hercules Supercluster, which is itself part of the much larger Great Wall super-structure.[6]

This article is about the cluster of galaxies Abell 2151. For the globular cluster of stars, see Messier 13.
Hercules Cluster
Observation data (Epoch J2000)
Constellation(s)Hercules
Right ascension16h 05m 15.0s[1]
Declination+17° 44′ 55″[1]
Brightest memberNGC 6041
Number of galaxies300[2]
Richness class2[3]
Bautz–Morgan classificationIII[3]
Redshift0.03660 (10 972 km/s)[1]
Distance
(co-moving)		156 Mpc (509 Mly) h−1
0.705 [1]
X-ray flux(15.00 ± 12.5%)×10−12 erg s−1 cm−2 (0.1—2.4 keV) [1]
Other designations
Abell 2151

The cluster's brightest member is the giant elliptical galaxy NGC 6041.[7]

See also

References
  1. "NASA/IPAC Extragalactic Database". Results for Abell 2151. Retrieved 2007-07-19.
  2. "National Optical Astronomy Observatory". Galaxies. Retrieved 2007-07-19.
  3. Abell, George O.; Corwin, Harold G., Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies" (PDF). Astrophysical Journal Supplement Series. 70 (May 1989): 1–138. Bibcode:1989ApJS...70....1A. doi:10.1086/191333. ISSN 0067-0049. Retrieved March 13, 2012.
  4. "Two Micron All Sky Survey". 2MASS Galaxy Science & Analysis. Archived from the original on 2007-06-30. Retrieved 2007-08-03.
  5. "University of Alabama Astronomy". Astronomical Image Galleries. Retrieved 2007-07-19.
  6. "HerculesClustertext". www.robgendlerastropics.com. Retrieved 24 October 2019.
  7. "NGC 6041". Retrieved 2018-01-23.


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