2026-03-05T16:44:03Z https://jaxa.repo.nii.ac.jp/oai

oai:jaxa.repo.nii.ac.jp:00038395 2023-06-20T22:41:20Z 1887:1891

The acceleration of the runaway growth due to collisional disruption 稲葉, 知士 田中, 秀和 中澤, 清 Inaba, Satoshi Tanaka, Hidekazu Nakazawa, Kiyoshi 惑星集積 惑星集積 小惑星衝突 微惑星 破砕 質量分布 惑星進化 太陽重力 加速度 超高速衝突 planetary accretion planetary accretion asteroid collision planetesimal fragmentation mass distribution planetary evolution solar gravitation acceleration hypervelocity impact We investigate analytically the runaway growth of a protoplanet taking into account the disruption of planetesimals, which is made by the high velocity collision between planetesimals. As for the mass distribution of collisional fragments, we adopt a simple model proposed by Dohnanyi (1969). Calculations show that the growth of a protoplanet is accelerated by a factor of 2.5 by the help of the disruption of planetesimals compared with the case of no disruption. 資料番号: AA0063352028 conference paper 宇宙航空研究開発機構宇宙科学研究本部 Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS) 1995-12 第28回月・惑星シンポジウム 106 109 Proceedings of the 28th ISAS Lunar and Planetary Symposium https://jaxa.repo.nii.ac.jp/records/38395 eng metadata only access