Unveiling the dynamical stage of galaxy clusters through the intracluster light

The intracluster light (ICL) is the most unexplored component of galaxy clusters. It is defined as a low surface brightness, extended emission composed by stars that are bound by the potential of the cluster but do not belong to any galaxy in particular. Simulations predict that minor and major mergers can mainly drive the formation of ICL, specially for z<0.5. We show the results of measuring the ICL fraction (defined as the ratio between the ICL and the total flux of the cluster) in several optical and infrared broadband filters -using data from the Hubble Space Telescope, collected by CLASH, FF, and RELICS programs- and how they relate with the dynamical stage of the systems and the stellar populations of the galaxy members. Our sample spans the redshift interval 0.1

21/10/2021 - 12:30
Dra. Yolanda Jimenez-Teja
Instituto de Astrofísica de Andalucía - CSIC, Granada, Spain