Idit Zehavi (CWRU, Astronomy)
Date: Thu. September 28th, 2017, 4:00 pm-4:00 pmLocation: Rockefeller 301
Galaxy Clustering and the Galaxy-Halo Connection
In the contemporary view of the Universe, galaxies form and evolve in dark matter halos. Modern galaxy surveys, most notably the Sloan Digital Sky Survey, have transformed the study of large-scale structure enabling detailed measurements of the spatial distribution of galaxies. I will discuss how we interpret these measurements using contemporary models of galaxy clustering which elucidate the relation between galaxies and dark matter halos. I will further describe one of the main challenges currently facing such analyses and present new results for the dependence of the galaxy content of halos on the assembly history of their host halos. This provides physical insight into the intricate relation between galaxies and halos and is important in the planning for upcoming surveys.