ES-01-0010

Accretion of solids on eccentric hot Jupiters

Sho Shibata

The origin of Hot Jupiters is still unknown. These planets may have reached their observed short periods through disk migration or high-eccentricity migration. Each formation path is expected to lead to a different final planetary composition. As a result, determining the composition of hot-Jupiters can reveal information on their formation history. In this study, we investigate the heavy-element (solid) accretion of giant protoplanets as their orbits evolve to short-period eccentric orbits. Using N-body simulations, we compare the planetesimal accretion rates for planets experiencing disk migration and high-eccentricity migration. Finally, we discuss how these results can be used to constrain the formation pathways of hot Jupiters.