Extreme Exoplanetary Systems: Hot Jupiters, Star-Disk-Binary Interactions and Circumbinary Planets
131A Campbell Hall
Dong Lai (Cornell)
Observations over the last decade have revealed exoplanetary systems that are completely different from our own Solar System. These extreme planetary systems are changing our view of planetary formation. I will focus on hot Jupiters, giant planets in close orbits around their host stars (period about 5 days). Many hot Jupiter systems are found to have highly misaligned orbital axes relative to the stellar spin axes. I will discuss possible physical causes behind the misalignment, including the roles of star-disk-binary interactions, resonances and spin chaos. I will also discuss the dynamics of planets around compact stellar binaries.