Hercules Cluster
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 ascension | 16h 05m 15.0s[1] |
| Declination | +17° 44′ 55″[1] |
| Brightest member | NGC 6050 |
| Number of galaxies | 300[2] |
| Richness class | 2[3] |
| Bautz-Morgan classification | III[3] |
| Redshift | 0.03660 (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 | |
| See also: Galaxy groups, Galaxy clusters, List of galaxy clusters | |
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.
See also
External links
- July 19, 2007 — Astronomy Picture of the Day
- July 16, 2009 — Astronomy Picture of the Day
- Hercules Cluster — University of Alabama
- The Hercules Cluster on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
References
- 1 2 3 4 5 "NASA/IPAC Extragalactic Database". Results for Abell 2151. Retrieved 2007-07-19.
- ↑ "National Optical Astronomy Observatory". Galaxies. Retrieved 2007-07-19.
- 1 2 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.
- ↑ "Two Micron All Sky Survey". 2MASS Galaxy Science & Analysis. Retrieved 2007-08-03.
- ↑ "University of Alabama Astronomy". Astronomical Image Galleries. Retrieved 2007-07-19.
Coordinates: 
16h 05m 15s, +17° 44′ 55″
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