The Hydra Cluster (or Abell 1060) is a galaxy cluster that contains 157 bright galaxies, appearing in the constellation Hydra. The cluster spans about ten million light-years and has an unusually high proportion of dark matter. The cluster is part of the Hydra-Centaurus Supercluster located 158 million light-years from Earth. The cluster's largest galaxies are elliptical galaxies NGC 3309 and NGC 3311 and the spiral galaxy NGC 3312 all having a diameter of about 150,000 light-years. In spite of a nearly circular appearance on the sky, there is evidence in the galaxy velocities for a clumpy, three-dimensional distribution.
A map of Hydra cluster
|Observation data (Epoch J2000)|
|Right ascension||09h 18.0m |
|Number of galaxies||157|
|Redshift||0.0548 (16,452 km/s)|
|58.3 Mpc (190.1 Mly) h−1|
|X-ray flux||6.1×10−11 erg s−1 cm−2 (0.5–2 keV)|
- "NASA/IPAC Extragalactic Database". Results for Abell 2151. Retrieved 13 June 2013.
- "National Optical Astronomy Observatory". Galaxies. Retrieved 19 July 2007.
- 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 12 March 2012.
- Wehner and Harris, p.1
- Nemiroff, R.; Bonnell, J., eds. (16 April 2001). "The Hydra Cluster of Galaxies". Astronomy Picture of the Day. NASA.
- The Hydra Supercluster An Atlas of the Universe.com
- Fitchett, Michael; Merritt, David (December 1988). "Dynamics of the Hydra I Galaxy Cluster". The Astrophysical Journal. 335: 18–34. Bibcode:1988ApJ...335...18F. doi:10.1086/166902.
- Wehner, Elizabeth M. H. and Harris, William E. (10 August 2006) UCD candidates in the Hydra Cluster . ArXiv.org. ApL Letters
- The Hydra Cluster on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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