Long Term Evolution of Compact Planetary Systems

Brad Hansen Poster

Mon, Feb 9, 2015 at 12:00 pm

131A Campbell Hall

Brad Hansen (UCLA)

The origin of the recently discovered population of planetary systems composed of multiple low mass planets in compact configurations is a subject of active debate. A proper consideration of this question must also account for various processes that sculpt the configurations between their origin and observation.


I will describe a set of calculations to study how the effects of tidal damping are transmitted through a planetary system by secular interactions and the resulting effect on planetary spacing, eccentricities and inclinations. I will show how this can manifest itself in known systems. In some cases, such as in the 55 Cancri system, this can lead to potentially dramatic effects.