The key physical-chemical processes determining the Composition and Temperature of (exo)planetary atmospheres

决定（外）行星大气成分和温度的关键物理化学过程

• 批准号: 362460241
• 负责人: Professor Dr. Ansgar Reiners
• 金额: --
• 依托单位: Max-Planck-Institut für Sonnensystemforschung (MPS)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 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/362460241?language=en
• 关键词: key; physical; chemical; processes; determining

Characterizing the atmospheres of extrasolar planets is a new frontier in exoplanetary science, and as such is dependent on observations and interpretation toolkits. This project will develop a novel strategy for addressing a key question in current exoplanetary atmospheric research: what are and how do the key chemical and physical processes determine the atmospheric composition and temperature of exoplanets? Hence, the main objective is to assess if the inclusion and combination of the different physical and chemical mechanisms of planetary atmospheres into the predictions can lead to a comprehensive understanding of planetary atmospheres, considering observations as a key to validation assessment. These issues have only been poorly understood so far, because observational data is still too sparse, present sources of uncertainties and compositions are largely unexplored, and, finally, models are limited by the physical and chemical treatment and lack of accurate predictions. The project will focus on five different levels of understanding: (1) Extending existing planetary atmospheric tools to exoplanets to incorporate the key physics and chemistry into the model; (2) re-analysing archival data as well as detecting atmospheres by new spectroscopic observations with current and near-future facilities -- including higher sensitivity and simultaneous wider coverage of the spectral range offered by VLT/CRIRES+, for which we use guaranteed time-- employing noise reduction, telluric correction analysis and algorithms for searching weak signatures in the data; (3) comparing the observations with the models to investigate which physical and chemical processes are most important; (4) determining the composition and temperature profiles of the observed well-defined selected samples; (5) generating a comprehensive library of templates of selected theoretical spectra of extrasolar planetary atmospheres. The multidisciplinary nature of the project is strong, involving a combination of well-developed astronomical, physical, chemical and computational tools and algorithms.

表征外星球外行星的大气是系外行星科学的新边界，因此取决于观察和解释工具包。该项目将制定一种新的策略，以解决当前系外行星大气研究中的关键问题：什么是以及关键的化学和物理过程如何决定大气组成和系外行星的温度？因此，主要目的是评估行星大气的不同物理和化学机制在预测中的包含和组合是否会导致对行星大气的全面理解，这是考虑到观察的关键，这是验证评估的关键。到目前为止，这些问题只是对这些问题的理解很少，因为观察数据仍然太稀疏，目前的不确定性和组成的来源在很大程度上没有探索，最后，模型受到物理和化学处理的限制，并且缺乏准确的预测。该项目将重点关注五个不同级别的理解：（1）将现有的行星大气工具扩展到系外行星以将关键物理和化学纳入模型； （2）重新分析档案数据以及通过新的光谱观察结果检测到具有当前和近乎未来设施的新观察，包括更高的灵敏度和同时对VLT/CRIRES提供的光谱范围的更广泛的覆盖范围，为此，我们使用保证的时间 - 使用保证的时间 - 用于降低降噪和algection drogection和Algortion neking Mange neking Mange neking Mange Mange Mange Mange nergortions nergors neking Mange Mange nergortion nergormant; （3）将观察结果与模型进行比较，以研究哪些物理和化学过程最重要； （4）确定观察到的明确的选定样品的组成和温度曲线； （5）生成一个综合的库，这些模板的选定理论光谱的模板库。该项目的多学科性质很强，涉及发达的天文，物理，化学和计算工具以及算法的结合。