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Transport of comets to the outer planetary system

Published online by Cambridge University Press:  28 February 2005

Arika Higuchi
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, 2-21-1 Osawa Mitaka Tokyo, Japan email: higuchia@th.nao.ac.jp Graduate School of Science and Technology, Kobe University, 1-1 Rokkodai-cho Nada Kobe Hyogo, Japan
Eiichiro Kokubo
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, 2-21-1 Osawa Mitaka Tokyo, Japan email: higuchia@th.nao.ac.jp
Tadashi Mukai
Affiliation:
Graduate School of Science and Technology, Kobe University, 1-1 Rokkodai-cho Nada Kobe Hyogo, Japan
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Abstract

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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 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.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Copyright
© 2005 International Astronomical Union