Speaker: Luigi Bassini (UZH)
Title: Star formation rate in cosmological simulations of galaxy (proto)clusters
Abstract: 
In recent years, the number of detected protoclusters is rapidly increasing. However, it is still difficult to draw a complete picture of galaxy cluster evolution using available data, as the resulting sample is still fairly heterogeneous being based on different detection methods, each having its own limitations and biases. In this context, cosmological hydrodynamical simulations represent the most advanced theoretical tool to provide a coherent interpretative framework of all such observations on proto-clusters. Nonetheless, before obtaining a meaningful interpretation of observational data on cluster evolution, it is important to study whether theoretical models match the available high redshift observational constraints. In this talk, I will show how results from cosmological simulations compare with respect to the high values of star formation rates which are observed in protoclusters regions in the redshift range 2<z<4, and I will show that the differences between theory and observations can be largely ascribed to a difficulty for theoretical models to reproduce high redshift galaxies star formation properties.