Host: The Japanese Society for Planetary Sciences: Local Organizing Committee for 2006 Fall Meeting
In protoplanetary disks, dust particles grow through mutual collisions. Dust particles are compressed by collisions and they can not keep the fluffy structure in the course of dust growth. The structure-evolution is important problem for the cross section, strength and the optical property. In this study, we perform N-body simulations of dust collisions and examine the compression process. At low velocity collisions, dust particles are not compressed and keep the fluffy structure. If collisional velocity is high, dust particles are compressed. We clarified the relation between the density and the collisional velocity from our simulation.
