Abell 2218 [SEP] constellation
Abell 2218
Abell 2218 is a cluster of galaxies about 2 billion light-years away in the constellation Draco.
Acting as a powerful lens, it magnifies and distorts all galaxies lying behind the cluster core into long arcs. The lensed galaxies are all stretched along the cluster's center and some of them are multiply imaged. Those multiple images usually appear as a pair of images with a third — generally fainter — counter image, as is the case for the very distant object. The lensed galaxies are particularly numerous,
Abell 1835
Abell 1835 is a galaxy cluster in the Abell catalogue. It is a cluster that also gravitational lenses more-distant background galaxies to make them visible to astronomers. The cluster has a red shift of around 75,900 km/s and spans 12′.
In 2004, one of the galaxies lensed by this cluster was proposed to be the most distant galaxy known, Galaxy Abell 1835 IR1916.
See also.
- Abell 2218
- List of Abell clusters