Transport of comets to the outer planetary system

Arika Higuchi, Eiichiro Kokubo, Tadashi Mukai
2004 Proceedings of the International Astronomical Union  
In the late stage of planet formation, planetesimals are perturbed by large (proto) planets. There are four fates of planetesimals, (1) to collide with planets, (2) to escape from the planetary region, (3) to survive in the planetary region, and (4) to fall onto the central star. The ratios of these fates depend on initial orbital parameters. We performed numerical simulations of gravitational scattering of planetesimals by a planet. We obtained the escape rate of planetesimals and its
more » ... ls and its dependence on the orbital parameters of the planetesimals and the planet. We also calculated the rate for increasing the semimajor axis to more than 3000AU. Using these results, we discuss the relative efficiency of the four giant planets of the solar system in the formation of the Oort cloud.
doi:10.1017/s1743921304008804 fatcat:sgsy7d5w7zhulfenx3zhjisx4i