Morphological evolution in dense environments: Testing ram pressure stripping in galaxy groups

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Chandra Proposal Id #05800536

Scientific paper

Ram pressure stripping is generally assumed to be ineffective in galaxy groups due to the low density of the intragroup medium and the relatively small velocity dispersions of group galaxies as compared to those in clusters. Whether this is indeed the case remains to be observationally confirmed. We propose to carry out with Chandra the first direct observational test of this assumption, using one of the best candidates for a group galaxy undergoing ram pressure stripping. Combined with predictions from existing simulations, this study will shed new light on which processes could be responsible for the formation of S0 galaxies in dense environments, the truncation of star formation in such environments, and the origin of the Butcher-Oemler effect in clusters.

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