Dynamics of Extrasolar Planetary Systems

AST 0507727 Frederic Rasio西北大学太阳系外行星系统动力学摘要该项目将对太阳系外行星系统的动力学和稳定性进行理论研究，其总体目标是更好地了解其他恒星周围行星系统的形成和演化，特别是那些在极端环境下的行星系统。重点将放在多行星系统，恒星相互作用期间的系统，脉冲星行星系统，以及行星动力学和中央星星之间的相互作用。这项工作的核心是在模拟中结合轨道动力学和流体动力学方法，以及适当的恒星演化。计划中的改进包括去除引力散射的近似值，以及更好地处理潮汐和潮汐加热（以及其他）。这里开发的动力学模拟工具也将应用于天体物理学的许多更广泛的领域。这里的工作是以学生为导向的计算天体物理学研究计划的一部分，该计划将继续进行。一名博士后研究员将得到支持和培训，以及在数值建模。由此产生的动画也将被纳入公共展览和活动在thenearby阿德勒天文馆。

AST 0507727Frederic RasioNorthwestern UniversityDynamics of Extrasolar Planetary SystemsABSTRACTA theoretical study of the dynamics and stability of extrasolar planetary systems will be conducted.The overall goal is a better understanding of the formation and evolution of planetary systemsaround other stars, particularly those in extreme environments. Special emphasis will be placed onmultiple planet systems, systems during stellar interactions, pulsar planet systems, and interactionsbetween planetary dynamics and the central star. Central to this work is the combination of orbitaldynamics and hydrodynamic methods in the simulations, as well as stellar evolution whereappropriate. Planned improvements include removing approximations in gravitational scattering andbetter treatments of tides and tidal heating (among others). The dynamics simulation toolsdeveloped here will also have application to many broader areas of astrophysics.The work here is part of a student-oriented research program in computational astrophysics whichwill be continued. A postdoctoral fellow will be supported and trained in numerical modeling aswell. The resulting animations will also be incorporated into public exhibitions and activities at thenearby Adler Planetarium.