2nd age planet formation in post main sequence binaries

主序双星中的第二纪行星形成

• 批准号: 1794923
• 金额: --
• 依托单位: University of Leicester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1794923
• 关键词: 2nd; age; planet; formation; post

Planets form in accretion discs around stars. Usually these discs are formed during the star formation process and as the star evolves the disc is dispersed leaving behind a planetary system. This project will investigate the intriguing prospect of 2nd generation planet formation in post main sequence binary systems, where in this case the disc is formed by mass transfer from a donor star companion. In wide binaries where 2nd generation planet formation may be possible, this occurs through wind accretion. The student will perform a population synthesis analysis to reveal the range of disc conditions and determine the fraction of binary systems that are expected to host planets. This will be compared to the binary populations in our own galaxy and compared with any observed planets in post main sequence systems.

行星形成于恒星周围的吸积盘中。通常，这些圆盘是在恒星形成过程中形成的，随着恒星的演化，圆盘被分散，留下一个行星系统。这个项目将调查后主序双星系统中第二代行星形成的有趣前景，在这种情况下，圆盘是由捐赠者伴星的质量转移形成的。在可能形成第二代行星的宽阔双星中，这是通过风吸积发生的。学生将进行人口综合分析，以揭示盘状条件的范围，并确定预期拥有行星的双星系统的比例。这将与我们银河系中的双星群体进行比较，并与后主序系统中任何观测到的行星进行比较。

项目成果

The galactic rate of second- and third-generation disc and planet formation

银河系第二代和第三代盘和行星形成的速率

• DOI: 10.1093/mnras/sty1756
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Hogg M