Computer Science
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1158..159s&link_type=abstract
EXOPLANETS AND DISKS: THEIR FORMATION AND DIVERSITY: Proceedings of the International Conference. AIP Conference Proceedings, V
Computer Science
Interplanetary Dust And Gas, Infall, Accretion, And Accretion Disks, Substellar Companions, Planets
Scientific paper
In protoplanetary disks, dust aggregates grow through mutual collisions, and they would be compressed from a fluffy structure to a relatively compact one. Since the cross section of dust aggregates is changed by the compression, when and how dust aggregates are compressed should be examined to reveal the process of dust growth. In this study, we performed N-body simulations of realistic oblique collisions of aggregates and examine their structure evolution. Applying a compression model based on the numerical simulations of head-on collisions (Suyama et al. 2008) to oblique collisions, we succeeded in the formulation of the evolution of the cross section of aggregates. As a result, the impact compression makes the density of aggregates extremely low. Such aggregates have a large cross section. Therefore, the dust growth process should be reconsidered quantitatively taking into account the model of this study.
Suyama Torn
Tanaka Hidekazu
Wada Koji
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