Effects of environment on the properties of galaxies in clusters via ram pressure stripping, Tomás Tecce (Instituto de Astronomía y Física del Espacio, Buenos Aires, Argentina)

Galaxies moving through a galaxy group or cluster may lose a significant fraction of their cold gas due to the pressure exerted by the hot diffuse gas that constitutes the intracluster medium. We investigate the effect of this process, called ram pressure stripping (RPS), on the properties of galaxies using a combination of non-radiative N-body/SPH simulations of galaxy clusters and a semi-analytic model of galaxy formation that includes the RPS effect. We will discuss the buildup of ram pressure over time and the influence of RPS on galaxy colours, cold gas content and star formation, focusing on clusters with masses in the range 10^14 - 10^15 h^-1 M_Sun.