Hydra Centaurus super clusters
The Hydra Centaurus supercluster is a supercluster that is the closest neighbor of our local supercluster ( Virgo supercluster ) in the large-scale structure of the universe .
The Hydra Centaurus supercluster consists of two major subgroups:
- the Centaurus subgroup with the galaxy clusters Abell 3565, Abell 3574, Abell 3581 and the Centaurus galaxy cluster (Abell 3526), as well
- the Hydra subgroup, which consists essentially of the Hydra galaxy cluster (Abell 1060).
The two subgroups are also considered to be separate superclusters, but they are related to each other as well as to the Virgo supercluster. All three superclusters are influenced by the presumed large attractor .
The distance of the supercluster is 140 million light years (43 Mpc ) for the nearest Centaurus cluster , up to 300 million light years (90 Mpc) for the most distant Abell 3581 cluster . The structure's brightest single galaxy is the elliptical galaxy NGC 4696 in the Centaurus Cluster with an apparent magnitude of 10.7 mag.
In the direction of the Centaurus supercluster, but with a distance of around 650 million ly. Still well behind it, lies the Shapley supercluster , which is one of the largest and densest known superclusters within a radius of 1 billion ly.
Web links
- The Centaurus and Hydra superclusters in Atlas of the Universe