399 citations · 10.7k across the 204 of their papers we have counts for
40 papers · 1 filter
Application and Evaluation of the Material Point Method for Low-Velocity Asteroid Collisions Involving Large Deformations
Haru Fukuta, Tomoaki Ishiyama, Shu-ichiro Inutsuka
The collisional lifetimes of asteroids larger than km in the present-day main belt are estimated to exceed the age of the solar system, suggesting that their shapes may p…
Modeling of Collisional Outcomes Based on Impact Simulations of Mars-sized Bodies
Hiroshi Kobayashi, Hidekazu Tanaka, Yukihiko Hasegawa +1
We investigate the outcomes of collisions between Mars-sized bodies through smooth particle hydrodynamics (SPH) simulations, focusing on the transitions among ``merging'', ``hit-an…
Giant Impact Events for Protoplanets: Energetics of Atmospheric Erosion by Head-on Collision
Kenji Kurosaki, Shu-ichiro Inutsuka
Numerous exoplanets with masses ranging from Earth to Neptune and radii larger than Earth have been found through observations. These planets possess atmospheres that range in mass…
On Secular Gravitational Instability in Vertically Stratified Disks
Ryosuke T. Tominaga, Shu-ichiro Inutsuka, Sanemichi Z. Takahashi
Secular gravitational instability (GI) is one promising mechanism for explaining planetesimal formation. The previous studies on secular GI utilized a razor-thin disk model and der…
Planetesimal formation by the gravitational instability of dust ring structures
Sanemichi Z. Takahashi, Eiichiro Kokubo, Shu-ichiro Inutsuka
We investigate the gravitational instability (GI) of dust-ring structures and the formation of planetesimals by their gravitational collapse. The normalized dispersion relation of…
Nonlinear Outcome of Coagulation Instability in Protoplanetary Disks II: Dust Ring Formation Mediated by Backreaction and Fragmentation
Ryosuke T. Tominaga, Hidekazu Tanaka, Hiroshi Kobayashi +1
In our previous work (Paper I), we demonstrated that coagulation instability results in dust concentration against depletion due to the radial drift and accelerates dust growth loc…