Poster Title: Evolution of galaxy population in clusters - Model predictions and comparison with observations
Abstract: We use semi-analytic techniques to follow the formation, the evolution and chemical enrichment of cluster galaxies in a hierarchical dark matter model. The use of simple physical prescriptions for the transport of metals in the different phases considered, and the choice of few physically motivated parameters, allow us to reproduce the latest observational results both in terms of luminosity and in terms of metallicity in the stellar population and in the intra-cluster medium (ICM). Model predictions for galaxy populations at higher redshift are presented and preliminary results are shown between such predictions and observational results obtained from the EDisCS survey.
EDisCS aims at studying the evolution of cluster population over more that 50% of cosmic time by combining photometric and spectroscopic informations on a large sample of clusters at redshift ~0.5 and 0.8 with existing informations on well studied nearby clusters. The homogeneity of quality data and the large sample at disposition allow to analyse galaxy population properties, together with their cluster-to-cluster variations. The comparison with semi-analytic models allows to address the questions of which are the physical mechanisms at work during galaxy evolution on such environments.
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