Institute for Advanced Study Astrophysics Seminar

I will discuss some of the issues about galactic disks which are still not well understood. These issues include the structure and chemical evolution of disks, disk heating, stellar moving groups, thick disks, bar formation, bulges, the formation of S0 galaxies, the evolution of the star formation rate in disk galaxies, maximum disks, scaling laws, and LambdaCDM problems on galactic scales.