Satellite Accretion in a ΛCDM Universe

VILLALÓN, CAROLINA; GARCÍA LAMBAS, DIEGO; SGRÓ, MARIO AGUSTÍN

Santiago

Workshop; Mock Santiago. Preparing for the Next Generation Surveys.; 2016

We use a Dark Matter only simulation to study the accretion of satellites in the ΛCDM Model. The large volume and resolution of the simulation enabled us to identify ∼ 350,000 massive host haloes (Mvir ≥ 5 × 10¹² M☉) surrounded by ∼ 700,000 satellites. This sample allowed us to study the radial velocity profiles of all satellites as a function of their distance to the primary object. Furthermore, we analysed the dependence of the radial velocity distribution with respect to themass of the host and the properties of the haloes that are being accreted, such as their mass, shape and angular momentum.