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.

我的项目包括分析亚恒星体的光谱，以确定它们的成分，这可能使我们能够限制它们的形成和演化。为了进行分析，我使用大气检索方法，通过拟合正演模型来获得分子丰度和压力-温度分布。目前，我正在分析褐矮星光谱，目的是限制它们的组成和对它们的形成施加限制。这也涉及到使检索方法适应棕矮星大气。在未来，我将把这种方法应用到其他对象中，并继续开发检索方法，以适应可用数据质量的提高。

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