日本地球惑星科学連合2018年大会

講演情報

[EE] ポスター発表

セッション記号 P (宇宙惑星科学) » P-PS 惑星科学

[P-PS01] Outer Solar System Exploration Today, and Tomorrow

2018年5月21日(月) 15:30 〜 17:00 ポスター会場 (幕張メッセ国際展示場 7ホール)

コンビーナ:木村 淳(大阪大学)、笠羽 康正(東北大学大学院 理学研究科 地球物理学専攻)、Vance Steven(Jet Propulsion Laboratory, Caltech、共同)、Kunio M. Sayanagi (Hampton University)

[PPS01-P06] Accretion of Vertically Stirred Small Bodies in the Protoplanetary Disk onto Circum-Planetary Disks

本間 徹1、*大槻 圭史1末次 竜2町田 正博3 (1.神戸大学大学院理学研究科、2.産業医科大、3.九州大学理学研究院)

キーワード:巨大惑星、衛星

High-resolution hydrodynamic simulations show that most of gas accretion onto circumplanetary disks occurs nearly vertically toward the disk surface from high altitude. For better understanding of the formation of giant planets and their satellites, we examine accretion of solid bodies vertically distributed in the protoplanetary disk onto the circumplanetary disk under the influence of such accreting gas flow. We use the distributions of density and velocity of the gas obtained by hydrodynamic simulation in calculating gas drag and integrate orbits of solid particles initially placed above the mid-plane of the protoplanetary disk. We find that small particles that cannot accrete onto the circumplanetary disk when they are initially confined in the mid-plane can accrete with the help of the vertically accreting gas. Accretion rates of small particles depend on their vertical scale-height in the protoplanetary disk. Our results indicate that vertical stirring of particles in the protoplanetary disks would be important for the supply of solid particles onto circumplanetary disks.