The Compact Group-Fossil Group Connection: Observations of a Massive Compact Group at z = 0.22*

  title={The Compact Group-Fossil Group Connection: Observations of a Massive Compact Group at z = 0.22*},
  author={C. M. D. Oliveira and E. Carrasco},
  journal={The Astrophysical Journal},
It has been suggested that fossil groups could be the cannibalized remains of compact groups that lost energy through tidal friction. However, in the nearby universe, compact groups that are close to the merging phase and display a wealth of interacting features (such as HCG 31 and HCG 79) have very low velocity dispersions and poor neighborhoods, unlike the massive, cluster-like fossil groups studied to date. In fact, known z = 0 compact groups are very seldom embedded in massive enough… Expand

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