Probing the atmospheres of extrasolar planets with high-resolution spectroscopy

对系外行星大气的研究是研究这些外星世界的化学、天气、气候和形成历史的最好（也是唯一的方法）。对系外行星的研究不仅告知了特定行星的历史，而且还揭示了行星形成的一般情况，并将我们自己的太阳系置于银河系的背景下。迄今为止，对这些行星的大多数观测要么是基于太空（如哈勃、斯皮策或詹姆斯·韦伯太空望远镜），要么是基于地面（如VLT/Keck）。空间和地面观测都探测大气的互补压力状态。尽管如此，迄今为止，结合空间和地面方法的工作还很少。在这个博士项目中，学生将基于伦敦大学学院开发的TauREx 3检索框架开发一个新的大气检索代码（即大气分析工具）。该学生已经接受了高分辨率光谱数据分析的培训，并将能够立即开始算法开发。

The study of exoplanet atmospheres is the best (and only way) to study the chemistry, weather, climate, and formation histories of these foreign worlds. The study of exoplanets does not only inform the history of the particular planet but also sheds light on planet formation in general and places our own solar system in the galactic context. To date, most observations of these planets are either space-based (e.g. Hubble, Spitzer or James Webb Space Telescope) or ground-based (e.g. VLT/Keck). Both, space and ground-based observations probe complementary pressure regimes of the atmospheres. This said, to date, little work has been undertaken to combine both space and ground approaches. In this PhD project, the student will work on developing a new atmospheric retrieval code (i.e. atmospheric analysis tool) based on the TauREx 3 retrieval framework developed at UCL. The student is already trained in the analysis of high-resolution spectra data analysis and will be able to start with the algorithmic development immediately.