Population Synthesis of Hot Jupiters and Close-in Super Earths

热木星和近距离超级地球的种群合成

• 批准号: 0908807
• 负责人: Peter Bodenheimer
• 金额: $ 33.58万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0908807&HistoricalAwards=false
• 关键词: Population; Synthesis; Hot; Jupiters; Close

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Drs. Peter Bodenheimer and Douglas Lin (University of California - Santa Cruz) will undertake a study to determine the frequency of habitable planets around other stars. In recent years, astronomers have discovered over 300 giant planets, ranging in mass from Neptune-sized to several Jupiter masses, but have not yet found small planets like the Earth. The discovery of these massive planets has provided support to the sequential accretion hypothesis (SAH), which assumes that the massive planets were formed, together with a rich population of earth-like planets, through grain condensation, planetesimal coagulation, embryo merging, and gas accretion. The goals of this project include identifying the dominant effects which led to the emergence of diverse populations of planets, including gas giants, hot Jupiters, super Earths, and habitable planets; predicting observable features such as the mass-period and period-eccentricity distributions which are unique signatures of SAH versus other planet formation scenarios; and discovering dependence of planetary properties as functions of the mass and chemical composition of their host stars.The project will contribute toward NSF's goal of integration of research and scientific education by using the talents of two graduate students and some undergraduates in various aspects of the theoretical calculations. Results will be disseminated through public lectures on planetary science and through contributions to science journals for the general public.

该奖项由 2009 年美国复苏和再投资法案（公法 111-5）资助。彼得·博登海默和道格拉斯·林（加州大学圣克鲁斯分校）将进行一项研究，以确定其他恒星周围宜居行星的频率。 近年来，天文学家已经发现了300多颗巨行星，质量从海王星大小到几木星质量不等，但尚未发现像地球这样的小行星。 这些大质量行星的发现为顺序吸积假说（SAH）提供了支持，该假说假设大质量行星与丰富的类地行星一起通过颗粒凝结、星子凝固、胚胎合并和气体形成吸积。 该项目的目标包括确定导致不同行星群出现的主导效应，包括气态巨行星、热木星、超级地球和宜居行星；预测可观测的特征，例如质量周期和周期偏心率分布，这些特征是 SAH 与其他行星形成情景相比的独特特征；并发现行星特性与其主恒星质量和化学成分的函数关系。该项目将通过利用两名研究生和一些本科生在理论各个方面的才能，为 NSF 整合研究和科学教育的目标做出贡献计算。 结果将通过行星科学的公开讲座和向公众投稿的方式传播。