Theoretical study on the origin and evolution of small icy bodies in the solar system

太阳系小冰体起源与演化的理论研究

• 批准号: 22340125
• 负责人: OHTSUKI Keiji
• 金额: $ 11.73万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22340125/
• 关键词: 衛星; リング; 巨大惑星; 惑星リング; 軌道数値計算

First, we examined temporary capture of planetesimals by a giant planet, which likely played an important role in capture of irregular satellites of giant planets. Using numerical simulations, we investigated capture rates as well as their dependence on various orbital parameters. Our results suggest that the source region of some of the prograge irregular satellites of Jupiter corresponds to the Hilda region. Next, we examined the process of particle accretion and collisional disruption of aggregates in the tidal environment. We obtained the critical radial distance for particle accretion, and clarified the condition for disruption. Finally, we examined capture of planetesimals by the circumplanetary gas disk of a growing giant planet, which is important in relation to the origin of regular satellites of giant planets. We obtained capture rates and also investigated their dependence on various parameters.

首先，我们研究了巨行星对星子的临时捕获，这可能在捕获巨行星的不规则卫星中发挥了重要作用。通过数值模拟，我们研究了捕获率及其对各种轨道参数的依赖性。我们的结果表明，木星一些前进不规则卫星的源区对应于希尔达区。接下来，我们研究了潮汐环境中粒子吸积和聚集体碰撞破坏的过程。我们得到了粒子吸积的临界径向距离，并阐明了粒子破裂的条件。最后，我们研究了正在生长的巨行星的绕行星气盘对星子的捕获，这对于巨行星的常规卫星的起源很重要。我们获得了捕获率并研究了它们对各种参数的依赖性。

项目成果

Collisions and gravitational interactions between particles in planetary rings

行星环中粒子之间的碰撞和引力相互作用

• 发表时间: 2012
• 期刊: Prog. Theor. Phys. Suppl.
• 作者: 松波雅治;宮崎秀俊;木村真一;他2名;Ohtsuki K.
• 通讯作者: Ohtsuki K.

Effects of planetesimals' random velocity on temporary capture by a planet

星子的随机速度对行星暂时捕获的影响

• 发表时间: 2011
• 期刊: Lunar and Planetary Science Conference XLII, LPI Contribution No.1608
• 作者: R.Suetsugu;K.Ohtsuki;T.Tanigawa
• 通讯作者: T.Tanigawa

粒子間の衝突と重力相互作用に起因する土星リングの粘性

由于粒子之间的碰撞和引力相互作用而产生的土星环的粘度

• 发表时间: 2011
• 作者: T.Iizuka;S.Kimura;他3名;安井佑貴
• 通讯作者: 安井佑貴

Effects of Particles'Spins and Surface Friction on Viscosity in Planetary Rings with Self-gravitating Particles

自引力粒子行星环中粒子自旋和表面摩擦对粘度的影响

• 发表时间: 2011
• 作者: Ishimoto;H.;K. Masuda;Y. Mano;N. Orikasa;A. Uchiyama;安井佑貴
• 通讯作者: 安井佑貴

Formation of multiple- satellite systems from circum- planetary particle disks

由环行星粒子盘形成多卫星系统

• 发表时间: 2013
• 作者: 松波雅治;宮崎秀俊;木村真一;他2名;K. Shimada;兵頭龍樹
• 通讯作者: 兵頭龍樹