Relazione su invito
The assembly history of galaxies in a cluster environment.
Iodice E.
In this talk I would like to present the study of the Hydra I cluster, at $z\sim 0.012$, based on deep images and integral-field (IF) spectroscopy. Deep images, obtained with VST, allowed to map the galaxy structure out the regions of the stellar halos, to detect the diffuse intra-cluster light components and the population of low-surface brightness (LSB) galaxies ($i.e.$, dwarfs and ultra-diffuse galaxies). In particular, we studied how the LSB galaxies are distributed in the cluster, in order to map the mass assembly of the Hydra I cluster. We discovered that galaxies are grouped in substructures in different regions of the covered cluster area. The non-uniform spatial distribution of galaxies supports the idea that several small galaxies are falling through the cluster core, feeding the cluster mass assembly process. This study motivated a spectroscopic follow-up with MUSE@VLT, entitled "Looking into the faintEst WIth muSe (LEWIS)". With LEWIS we obtained the first homogeneous IF spectroscopic survey of LSB and ultra-diffuse galaxies. This project will be also presented in my talk.