LExEn: Dynamical Forcing of Extreme Variations in Planetary Obliquities

建议编号：AST-9978269。沃德和卡纳普将研究行星对倾角的巨大变化的稳定性，这些变化将极大地影响季节、气候和行星的宜居性。将考虑各种行星系统架构，并探索大型卫星在稳定行星倾斜度方面的作用。重点将放在也占据恒星周围宜居带的行星上。他们将研究行星稳定性对各种行星系统结构的敏感性，他们的选择将以行星形成模型的结果和最近太阳系外行星系统的发现为指导。

P.I.: Ward, William Proposal Number: AST-9978269Drs. Ward and Canup will investigate the stability of planets against large changes in obliquity which would dramatically affect seasons, climate, and planetary habitability. A variety of planetary system architectures will be considered, and the role of a large satellite in stabilizing a planet's obliquity will be explored. An emphasis will be placed on planets that also occupy the habitable zone around a star. They will investigate the sensitivity of planetary stability to a variety of planetary system architectures, their selection of which will be guided by results from modeling planetary formation and recent discoveries of extrasolar planetary systems.