Chemical Characterisation of Sub-stellar Atmospheres

亚恒星大气的化学特征

• 批准号: 1952024
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1952024
• 关键词: Chemical; Characterisation; Sub; stellar; Atmospheres

My project involves analysing the spectra of sub-stellar bodies to determine their compositions, which may allow us to constrain their formation and evolution. To do this analysis, I am using atmospheric retrieval methods which derive molecular abundances and pressure-temperature profiles by fitting forward models to an observed spectrum. Currently, I am analysing brown dwarf spectra with the aim of constraining their compositions and placing constraints on their formation. This also involves adapting the retrieval method to brown dwarf atmospheres.In the future, I will apply this method to other objects and continue to develop the retrieval method in order to adapt to the increasing quality of the available data.

我的项目涉及分析子赛体的光谱以确定其组成，这可能使我们能够限制它们的形成和进化。为了进行此分析，我正在使用大气检索方法，这些方法通过将前向模型拟合到观察到的光谱来得出分子丰度和压力温度的轮廓。目前，我正在分析棕色矮小光谱，目的是限制其成分并在其形成上施加约束。这还涉及将检索方法调整为棕色矮小的气氛。将来，我将将此方法应用于其他对象，并继续开发检索方法，以适应可用数据的不断提高的质量。

项目成果

Thermal and Radiative Properties of Exoplanet Atmospheres Across the Mass Range

系外行星大气在整个质量范围内的热和辐射特性

• DOI: 10.17863/cam.83462
• 发表时间: 2021
• 作者: Piette A