Japan Geoscience Union Meeting 2024

Presentation information

Print

[J] Oral

P (Space and Planetary Sciences ) » P-PS Planetary Sciences

[P-PS07] Planetary Sciences

Thu. May 30, 2024 3:30 PM - 4:45 PM 102 (International Conference Hall, Makuhari Messe)

convener:Sota Arakawa(Japan Agency for Marine-Earth Science and Technology), Haruhisa Tabata(Department of Earth and Planetary Science, University of Tokyo), Ryosuke Tominaga(School of Science, Department of Earth and Planetary Sciences, Tokyo Institute of Technology), Chairperson:Haruhisa Tabata(Department of Earth and Planetary Science, University of Tokyo), Ryosuke Tominaga(Star and Planet Formation Laboratory, RIKEN Cluster for Pioneering Research), Sota Arakawa(Japan Agency for Marine-Earth Science and Technology)

4:00 PM - 4:15 PM

[PPS07-03] Impact simulations for protoplanets and modeling of collisional outcomes

*Hiroshi Kobayashi1 (1.Department of Physics, Nagoya University)

Keywords:planetary collisions, planet formation

Collisional evolution forms planets. Collisions induces fragmentation as well as coagulation. Therefore, collisional outcome models are important for planet formation theory. We investigate impacts of protoplanets via simulations with Smoothed Particle Hydrodynamics (SPH).
We carried out simulations of mars-mass targets with projectiles (1/30-1 mars masses), impact angles (30,45, 60 degrees), and impact velocities (1.1-32 mutual escape velocities). We confirm collisional outcomes as ``merging'', ``hit and run'', and ``fragmentation'', similar to previous studies.
We successfully construct the collisional outcome model, which reproduce the first and second largest remnant masses of simulations.