| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
|
|---|
| Research Abstract |
Small solar system bodies, such as comets and asteroids, are considered to be remnants of planetesimals formed through collisional growth of dust aggregates consisting of submicron grains in a protoplanetary disk. We carried out numerical simulations of collisions of dust aggregates to construct a structure evolution model of planetesimals and small solar system bodies. We reveal that very low density planetesimals are inevitably formed as a result of collisional growth of dust aggregates and such process leads small solar system bodies to have low density structures we observe at present.
|
