Studying the hot subdwarf population with Gaia

用盖亚研究热亚矮星种群

• 批准号: 325816898
• 负责人: Professor Dr. Stephan Geier
• 金额: --
• 依托单位: Dr. Remeis-Sternwarte Bamberg - Astronomisches Institut -
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/325816898?language=en
• 关键词: Studying; hot; subdwarf; population; Gaia

Being the stripped cores of red giants, hot subdwarf stars turned out to be important markers of peculiar events in stellar evolution ranging all the way from star-planet interactions to the progenitors of stellar explosions used to measure the expansion of our Universe. With the successful operation of the Gaia mission, the field of stellar astrophysics will soon enter into a new era. The field of hot, evolved stars, which are quite rare, will benefit most significantly because the number of known objects will soon rise by one or two orders of magnitude. Therefore we have to master the transition from analysing single objects to characterising whole populations of objects. In this joint proposal between Tübingen and Bamberg we propose one PostDoc and two PhD positions to compile the first all-sky catalogue of those objects, determine their fundamental parameters and formation channels, study the hot subdwarfs at extreme velocities, and find a new class of progenitors and ejected hypervelocity companions of type Ia supernovae.

作为红色巨人的跳跃核心，热的恒星将ot r-pranet相互作用转向了用于测量盖亚（Gaia）任务的恒星爆炸术的祖先。 。博士后和两个PHD职位，以编译这些物体的第一个全套目录，确定其基础原理和地层渠道，研究IA型超新星的极端速度per速伴侣的热分子。