[M-GI35] 計算科学による惑星形成・進化・環境変動研究の新展開

[MGI35-P01] Global N-body Simulation from Inner Region to Outer Region

*小南 淳子¹、井田 茂¹、牧野 淳一郎²、石城 陽太⁵、台坂 博³、藤本 正樹⁴ (1.東京工業大学、2.神戸大学、3.一橋大学、4.宇宙航空研究開発機構、5.東京大学)

キーワード：N体計算、太陽系、微惑星集積

Most of the past N-body simulations started from initial conditions that were limited to radially narrow disks, for the limit of the particle number. However, several senarios have been proposed to expain the formation of Solar System, which includes the migration of planets radially with tens of AU. Hence, in order to construct the general formation scenario, we need to carry out simulations which cover the whole disk (~0.5AU - 40AU). We carried out the N-body simulation starting from planetesimal disk ranging from 0.5 - 40 AU. Surface density discontinuity at the ice line and the runaway gas accretion of the gas giant planets were included in the simulation. The initial number of particles was ~570000. Further investigation carrying out more simulations using different parameters are necessary. Here we introduce the first simulation that covers wide area of the disk.