CandY: Circumbinary And RockY

CandY：Circumbinary 和 RockY

• 批准号: EP/Z000327/1
• 负责人: Amaury Triaud
• 金额: $ 251.78万
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FZ000327%2F1
• 关键词: CandY; Circumbinary; RockY

Planets orbiting both stars of a binary system -circumbinary planets- are challenging what we think we knowabout how exoplanets are assembled, and how their orbits subsequently evolve. Because they orbit oneanother, binary stars disturb the process of core accretion that creates planets. But, instead of changing thenumber of planets created, the two stars instead affects circumbinary planets' masses and orbital separations,thus shining an unexpected light onto which planet formation processes are truly important. With itsambitious programme, CandY will consolidate circumbinary planets as an unavoidable corner ofexoplanetary science, crucial for the study of planet formation, and the study and interpretation of exoatmospheres.To better our understanding of planet formation, the CandY project will perform the first systematic study ofcircumbinary planets. CandY will develop a suite of new analytical methods, and conduct three ambitiousobserving campaigns that will lead to the detection of dozens of new circumbinary planets, including someall way down to rocky masses. In parallel, the CandY team will study the atmospheric composition ofcircumbinary planets for the very first time in order to reveal yet more clues about these exotic worlds.During the CandY project, we will record every similarity, and any difference between the population ofcircumbinary planets and the population of exoplanets orbiting single stars. This systematic exercise willcreate a leap in our understanding about how planets are produced and which processes dominate planetassembly and their subsequent orbital migration.In addition, circumbinary planets have unique orbital properties amongst exoplanets. Their orbital dynamicsboost their probability to experience transits easing exo-atmospheric investigations. Moreover, circumbinaryexoplanets are the only transiting planets for which seasonal atmospheric variations can be studied.

围绕双星系统的两颗恒星运行的行星--环双星行星--正在挑战我们认为我们所知道的系外行星是如何组装的，以及它们的轨道随后如何演变。因为它们相互环绕，双星干扰了核心吸积的过程，而核心吸积是产生行星的过程。但是，这两颗恒星并没有改变行星形成的数量，而是影响了环双星行星的质量和轨道间距，从而为行星形成过程的真正重要性提供了意想不到的光线。CandY项目将通过其艰巨的计划巩固环联行星作为系外行星科学中一个不可回避的角落的地位，这对于行星形成的研究以及系外大气层的研究和解释至关重要。为了更好地理解行星形成，CandY项目将首次对环联行星进行系统研究。CandY将开发一套新的分析方法，并进行三项雄心勃勃的观测活动，这将导致发现数十个新的环双星行星，包括一些岩石质量。与此同时，CandY团队将首次研究环联行星的大气成分，以揭示更多关于这些奇异世界的线索。在CandY项目期间，我们将记录环联行星和围绕单个恒星运行的系外行星之间的所有相似性和差异。这一系统性的研究将使我们对行星是如何产生的以及哪些过程主导行星的聚集和随后的轨道迁移的理解发生飞跃。此外，环双星行星在系外行星中具有独特的轨道特性。它们的轨道动力学提高了它们经历凌日的可能性，从而减轻了大气层外的调查。此外，环联系外行星是唯一可以研究季节性大气变化的凌日行星。