Japan Geoscience Union Meeting 2015

Presentation information


Symbol P (Space and Planetary Sciences) » P-PS Planetary Sciences

[P-PS21] Planetary Sciences

Sun. May 24, 2015 2:15 PM - 4:00 PM A02 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Kosuke Kurosawa(Planetary Exploration Research Center, Chiba Institute of Technology), Keiko Hamano(Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo), Chair:Hiroshi Kobayashi(Department of Physics, Nagoya University), Sin-iti Sirono(Department of Earth and Planetary Sciences, Nagoya University)

2:15 PM - 2:30 PM

[PPS21-14] Planetesimal size and turbulence strength in a protoplanetary disk

*Hiroshi KOBAYASHI1, Hidekazu TANAKA2, Satoshi OKUZUMI3 (1.Nagoya University, 2.Institute of Low Temperature Science, Hokkaido University, 3.raduate School of Science, Tokyo Institute of Technology)

Keywords:planet formation, planetesimal, asteroids, comets

We investigate the collisional evolution of bodies with radius from 1 to 1000 km in a turbulent disk. The growth of small bodies is affected by turbulence. Once bodies get larger and turbulence is negligible, large bodies start runaway growth. Therefore, the size distribution depends on the strength of turbulence. The size distribution is directly related to that of minor bodies in the Solar System and affects subsequent planet formation.