Hydra Cluster
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.
| 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(s) | Hydra |
| Right ascension | 09h 18.0m |
| Declination | −12° 05′ |
| Number of galaxies | 157 |
| Richness class | 1 |
| Bautz–Morgan classification | III |
| Redshift | 0.0548 (16,452 km/s) |
| 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) |
| Other designations | |
| Abell 1060 | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.