Dynamical structure and evolution of the young solar system

年轻太阳系的动力学结构和演化

• 批准号: 1312498
• 负责人: Renu Malhotra
• 金额: $ 36.3万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-15 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1312498&HistoricalAwards=false
• 关键词: Dynamical; structure; evolution; young; solar

This work will conduct theoretical analysis and numerical simulations to study the inner solar system orbital dynamics that were affected by giant planet migration during the early solar system. The PI and her team will investigate the non-uniform distribution of the angular orbital elements of Near-Earth-Objects (NEOs), calculate the secular dynamics of the inner solar system with different orbital architectures, carry out numerical simulations of the stability of such architectures under the effects of giant planet migration, and calculate the loss rates from the pre-LHB asteroid reservoirs and estimates of the flux of large impacts on the planets.Broader impacts of the work include applications to extrasolar planetary systems, debris disks and the Earth's climate history. This works has implications for the formation and development of the early solar system, is relevant to understanding the population of NEOs, some of which may be hazardous to Earth, and to modeling the planetary systems around other stars. The work will be involved in a Ph.D. dissertation and the PI will produce a slide presentation on this work for public audiences, made available for free.

本工作将通过理论分析和数值模拟来研究太阳系早期巨行星迁移对太阳系内轨道动力学的影响。PI和她的团队将研究近地天体（neo）的角度轨道元素的非均匀分布，计算不同轨道结构下太阳系内部的长期动力学，对巨行星迁移影响下这种结构的稳定性进行数值模拟，计算lhb前小行星储存库的损失率，并估计对行星的大影响的通量。这项工作的广泛影响包括应用于太阳系外行星系统、碎片盘和地球的气候历史。这项工作对早期太阳系的形成和发展具有重要意义，与了解近地天体的数量有关，其中一些可能对地球有害，并对其他恒星周围的行星系统进行建模。这项工作将涉及到一篇博士论文，PI将制作一份关于这项工作的幻灯片供公众免费使用。