Planetary Systems from Kepler

Dan Fabrycky, UC Santa Cruz

On Feb. 2, the Kepler space mission released its first 4 months of data on all targets, as well as a series of papers on statistical results on transiting exoplanets. Perhaps the biggest surprise is the great abundance of candidate multiple-planet systems; out of 997 targets with a candidate transiting exoplanet, 170 of them hosted multiple candidates. I describe the dynamics (stability, transit timing variations) and architecture (resonances, inclinations) of these new planetary systems. Dynamics allows us to confirm that some of these systems are indeed planetary (Kepler-9, Kepler-11), and continued monitoring of these and other systems (the ultra-compact KOI-500, the coorbital KOI-730) will challenge and refine theories of the formation of planetary systems.