In the morning I started to think about my lectures for the IMPRS. I think my first will be on fitting a straight line to data. It turns out I have hours of material on this! I pity the students.
In the afternoon, Glenn van de Ven (IAS) came by to discuss dynamical modeling with Bovy and me. van de Ven has beautiful results on external galaxies and on the globular cluster omega Cen, modeled by what's known as the Schwarzschild method. In the globular cluster, for which he has similar kinds of data to what we have for the Galactic Center, he has evidence for several different dynamical components in phase space; we wondered whether those might be related to the fact that omega Cen also has several different stellar populations.