Hydra Cluster
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The Hydra Cluster (or Abell 1060) is a galaxy cluster that contains 157 bright galaxies, appearing in the constellation Hydra.[1] The cluster spans about ten million light-years and has an unusually high proportion of dark matter.[2] 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.[3] In spite of a nearly circular appearance on the sky, there is evidence in the galaxy velocities for a clumpy, three-dimensional distribution.[4]
References
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- ↑ Wehner and Harris, p.1
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- ↑ The Hydra Supercluster An Atlas of the Universe.com
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Related reading
- Wehner, Elizabeth M. H. and Harris, William E. (10 August 2006) UCD candidates in the Hydra Cluster . ArXiv.org. ApL Letters
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