Hot gas in groups as a probe of galaxy evolution

The evolution of most galaxies takes place within the environment of a galaxygroup. The group potential retains gas left over from galaxy formation orejected from galaxies. XMM has the sensitivity to study this record of theinteraction between galaxies and their environments in unprecedented detail.We propose high quality observations of a sample of five groups which we havestudied with ROSAT. These systems cover a range of group and galaxy properties,and the detailed temperature and abundance maps we construct will permit astudy of the dynamical evolution of the groups and the chemical evolution oftheir galaxies. For example we will be able to correlate the contributions of truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]