Connection between the properties of galaxies in dense environments and their orbital evolution

T. HOUGH; A. ARAUDO, S. A. CORA, G. E. ROMERO; R. HAGGAR; C. A. VEGA-MARTÍNEZ

Córdoba

Congreso; Reunión Anual de la Asociación Argentina de Astronomía; 2021

Galaxies located in groups and clusters are likely to have attenuated star-formation activity, reddercolors and less atomic and molecular gas content than isolated galaxies with similar stellar mass content. Recent works have shown that these trends extend beyond the virial radius of such systems which represent high density environments. In this work we combine the semi-analytic model of galaxy formation and evolution sag with DM-only simulations of regions that contain the most massive clusters present in the mdpl2 simulation. We use 102 relaxed clusters with Mhalo > 10^15M  to study the evolution of the star-formation activity and hot gas content of ancient infallers, recent infallers and backsplash galaxies, thus establishing a connection with their orbital evolution.