Dark matter stripping in galaxy clusters: a look at the Stellar to Halo Mass relation in the Illustris simulation

Understand

Satellite galaxies in galaxy clusters represent a significant fraction of the global galaxy population.

• Because of the unusual dense environment of clusters, their evolution is driven by different mechanisms than the ones affecting field or central galaxies.
• Understanding the different interactions they are subject to, and how they are influenced by them, is therefore an important step towards explaining the global picture of galaxy evolution.
• In this paper, we use the publicly-available high resolution hydrodynamical simulation Illustris-1 to study satellite galaxies in the three most massive host haloes (with masses $M_{200} > 10^{14}\,h^{-1}\rm{M}_{\odot}$) at $z=0$.