Characterization and retrieval of atmospheric parameters of terrestrial extrasolar planets around cool host stars

冷主星周围类地系外行星大气参数的表征和反演

• 批准号: 282760199
• 负责人: Professorin Dr. Heike Rauer
• 金额: --
• 依托单位: Institut für Geologische Wissenschaften
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/282760199?language=en
• 关键词: Characterization; retrieval; atmospheric; parameters; terrestrial

Characterizing atmospheres of hot Super-Earth (SE) orbiting M-dwarf stars is the next logical step in the search for Earth-like worlds. The main challenges are (1) to explore the range of possible conditions (temperature, pressure, composition etc.) and (2) to retrieve the state of the atmosphere from spectroscopic observations. We aim to refine and apply (1) our (chemistry-convection-climate) code to study atmospheres near the inner edge of the habitable zone; and 2) versatile solvers for the ill-posed inverse problem to estimate atmospheric parameters from spectra. Very little is known about SE exoplanet atmospheres; the retrieval code should therefore be flexible. Accordingly climate modeling will help to provide a library of synthetic observations encompassing the large variety of spectra to be expected and a priori estimates of the atmospheric state serving as initial guess or constraints. Combining our expertise, we will address the questions: which are the key parameters affecting climate, habitability, and biosignatures, what will atmospheric spectra look like, and what information can be retrieved by spectroscopy?

表征热超级地球（SE）绕M-dwarf恒星的气氛是寻找类似地球的世界的下一个逻辑步骤。主要挑战是（1）探索可能条件（温度，压力，成分等）和（2）从光谱观测中检索大气状态的范围。我们的目标是完善和应用（1）（1）（化学传染气候）代码来研究宜居区内边缘附近的气氛； 2）用于估计光谱的大气参数的逆问题的多功能求解器。关于SE系外行星的气氛知之甚少。因此，检索代码应该是灵活的。因此，气候建模将有助于提供一个合成观察库，其中包括预期的各种光谱，以及对大气状态作为初始猜测或约束的先验估计。结合我们的专业知识，我们将解决这些问题：哪些关键参数影响了气候，可居住性和生物签名，大气光谱将是什么样的，光谱可以检索哪些信息？

项目成果

SVEEEETIES: singular vector expansion to estimate Earth-like exoplanet temperatures from infrared emission spectra

SVEEEETIES：奇异向量展开从红外发射光谱估计类地系外行星温度

• DOI: 10.1051/0004-6361/201936511
• 发表时间: 2020
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: F. Schreier;S. Städt;F. Wunderlich;M. Godolt;J. Grenfell
• 通讯作者: J. Grenfell

Distinguishing between Wet and Dry Atmospheres of TRAPPIST-1 e and f

• DOI: 10.3847/1538-4357/aba59c
• 发表时间: 2020-06
• 期刊: The Astrophysical Journal
• 作者: F. Wunderlich;M. Scheucher;M. Godolt;J. Grenfell;Franz Schreier;P. Schneider;David J. Wilson;Alejandro S'anchez L'opez;Manuel L'opez Puertas;Heike Rauer

Possible Atmospheric Diversity of Low Mass Exoplanets – Some Central Aspects

• DOI: 10.1007/s11214-020-00716-4
• 发表时间: 2020-07
• 期刊: Space Science Reviews
• 影响因子: 10.3
• 作者: J. Grenfell;J. Leconte;F. Forget;M. Godolt;Ó. Carrión-González;L. Noack;F. Tian;H. Rauer;F. Gaillard;É. Bolmont;B. Charnay;M. Turbet

Transmission spectroscopy with the ACE-FTS infrared spectral atlas of Earth: A model validation and feasibility study

使用地球 ACE-FTS 红外光谱图集进行透射光谱：模型验证和可行性研究

• DOI: 10.1016/j.molap.2018.02.001
• 发表时间: 2018
• 期刊: Molecular Astrophysics
• 作者: F. Schreier;S. Städt;P. Hedelt;M. Godolt
• 通讯作者: M. Godolt

The Voigt and complex error function: Humlíček’s rational approximation generalized

Voigt 和复误差函数：Humläek 的有理逼近广义化

• DOI: 10.1093/mnras/sty1680
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: F. Schreier