Fossil groups origins. I. RX J105453.3+552102 a very massive and relaxed system at z ~ 0.5
Context. The most accepted scenario for the origin of fossil groups is that they are galaxy associations in which the merging rate was fast and efficient. These systems have assembled half of their mass at early epoch of the Universe, subsequently growing by minor mergers, and therefore could contain a fossil record of the galaxy structure
Aguerri, J. A. L. et al.
Fecha de publicación:
3
2011