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

ROAN HAGGAR; TOMAS HOUGH; VEGA-MARTÍNEZ, CRISTIAN A; SOFIA A. CORA

Congreso; 63º Reunión Anual de la Asociación Argentina de Astronomía; 2021

Asociación Argentina de Astronomía

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. Recentworks have shown that these trends extend beyond the virial radius of such systems which represent high densityenvironments. In this work we combine the semi-analytic model of galaxy formation and evolution sag withDM-only simulations of regions that contain the most massive clusters present in the mdpl2 simulation. Weuse 102 relaxed clusters with Mhalo > 1015 Mto study the evolution of the star-formation activity and hot gascontent of ancient infallers, recent infallers and backsplash galaxies, thus establishing a connection with theirorbital evolution.