Early versus late type galaxies in compact groups

Abstract

We find a strong correlation between the effective radius of the largest early-type galaxies in compact groups of galaxies and the velocity dispersion of the groups. The lack of a similar correlation for late type galaxies is supportive of the so called second generation merging scenario which predicts that ellipticals should dominate the internal dynamics of the groups, while late-type galaxies are mainly recent interlopers which are still in an early stage of interaction with the group potential.

Astron. Nachr., IN PRESS

References in corpus (4)

• A ROSAT survey of Hickson's compact galaxy groups
• Compact groups of galaxies
• Small Groups of Galaxies: a Clue to a Critical Universe
• HCG 16: A High Concentration of Active Galaxies in the Nearby Universe

Cited by in corpus (2)

• The relation between galaxy activity and the dynamics of compact groups of galaxies
• Possible Relations between Brightest Central Galaxies and Their Host Galaxies Clusters and Groups