The build-up of the red sequence in high redshift galaxy clusters

The scientific goal of my PhD is to understand how the evolution of galaxies is affected by the environment in which they reside. I have analysed a sample of distant galaxy clusters, studying the properties of galaxies in dense environments, where interactions with other galaxies are more probable, at early cosmic epochs. The main result of my thesis is that the environment regulates the star-formation timescales and induces morphological transformations in galaxies. My thesis opens new questions, however, which pose scientific cases for the next generation of telescopes and instruments as well as theoretical models.