Satellite galaxies and the baryon cycle

Late-time galaxy evolution is driven by a variety of non-linear processes such as radiative cooling, supernova feedback and AGN accretion, which together act to largely decouple baryonic structure growth from that of the dark matter. It remains a formidable challenge to untangle these processes using theoretical or simulation techniques, necessitating an empirical approach through controlled observations. One way to attempt this is by comparing the properties of satellite galaxies to those of galaxies that are central, or dominant, in their host halo. As much of the physics on kiloparsec scales and smaller is likely the same, the comparison in principle enables a useful test of models by controlling for many uncertain parameters. I will present recent and forthcoming observations of galaxy clusters and groups at 0.8