Invited Presentation

Stripping, quenching and morphological transformations of cluster galaxies according to the IllustrisTNG simulations

Author(s): Annalisa Pillepich (MPIA)

Presenter: Annalisa Pillepich (MPIA Heidelberg)

I will discuss recent progress in modeling galaxies within massive clusters with cosmological hydrodynamical simulations. In particular, I will focus on the IllustrisTNG project, a series of three cosmological volumes capable of resolving the inner structures of galaxies as small as the classical dwarfs of the Milky Way, as well as of sampling the large scale structure of the Universe with thousands among massive groups and clusters of galaxies. The latest installment of the project, TNG50, features a Virgo-like galaxy cluster at numerical resolution and physical sophistication that exceed those of currently available zoom-in cluster simulations. I will discuss a number of predictions from IllustrisTNG about the life and fate of cluster galaxies: these will include the frequency and properties of jellyfish galaxies, the time scales for quenching, stellar morphological transformations, the stellar-to-halo mass relation and the emergence and global properties of the intra-cluster light.