XMM tests galaxy evolutions models

Current models of galaxy evolution rely critically on feedback supernova and AGNfeedback processes. The energy released by past star formation and AGN activityimprints a fossil record on the thermodynamic properties of theintragroupmedium (IGM). This can be decoded by studying the Xray emission.for an unbiased sample of groups with known galaxy and AGN properties. Thereforewe propose an Xray survey with XMMNewton for 255 ksec to observe 17 galaxygroups with Msim10^{13} M_odot selected from our Zurich ENvironmental Surveythat host >8 members. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]