Abstract:

Galaxy clusters are massive structures made of dark matter, hot gas
and galaxies that grow through the accretion of smaller systems. Dense
environments such as these tend to prematurely shut down star
formation in member galaxies. In this presentation, I explore the link
between the cluster environment and member galaxies using a
statistical technique called total light stacking. I first examine the
star formation activity of clusters as a functions of redshift,
showing that before z~1.5, the environment does not impact star
formation. I next demonstrate that total light stacking can be used to
detect the splashback radius, a physical boundary between the cluster
and the surrounding infalling regions. I finally present a proof of
concept of the potential of total light stacking to investigate the
star formation history of the cluster infalling region, showing that
the fraction of the stellar mass in this region increases with
increasing redshift.