Hydra Cluster
Galaxy cluster in the constellation Hydra
From Wikipedia, the free encyclopedia
The Hydra Cluster (or Abell 1060) is a galaxy cluster that contains 157 bright galaxies, appearing in the constellation Hydra.[4] The cluster spans about ten million light-years and has an unusually high proportion of dark matter.[5] 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.[6] In spite of a nearly circular appearance on the sky, there is evidence in the galaxy velocities for a clumpy, three-dimensional distribution.[7]
| Hydra Cluster | |
|---|---|
 Central region of Abell 1060 (Hydra Cluster) with legacy surveys. The bright stars are HD 92036 (middle left) and HD 91964 (bottom) | |
| Observation data (Epoch J2000) | |
| Constellation | Hydra |
| Right ascension | 10h 36m 42.7100s[1] |
| Declination | −27° 31′ 42.900″[1] |
| Number of galaxies | 157[2] |
| Richness class | 1[3] |
| Bautz–Morgan classification | III[3] |
| Redshift | 0.012389 ± 0.000123[1] |
| Distance | 58.3 Mpc (190.1 Mly) h−1 0.705 |
| X-ray flux | 6.1×10−11 erg s−1 cm−2 (0.5–2 keV)[1] |
| Other designations | |
| Abell 1060 | |
