Title: The star formation and mass assembly histories of galaxies

Speaker: Houjun Mo, University of Massachusetts

Time: 20th May,3:00pm

Location:3rd floor Lecture Theatre

Abstract:

The average star formation and stellar mass assembly histories in dark matter halos can be inferred from the observed stellar mass/luminosity functions at different redshifts combined with the observed stellar mass/luminosity function of cluster galaxies at low z.

The inferred star formation and stellar mass assembly histories show different characteristics in three different stellar mass/halo mass scales.Dwarf galaxies on average show two stage of star formation, but their star formation/assembly histories are very diverse. Massive galaxies with form their stars early but the most massive galaxies may have assembled later. Galaxies in the intermediate mass range formed and assembled their stars late. These results have important implications for galaxy formation and evolution.