arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.14311astro-ph.EPastro-ph.SR
收藏

系外行星大气探测面临的突出挑战

Outstanding Challenges of Exoplanet Atmospheric Retrievals

Joanna K. Barstow, Kevin Heng

摘要:

光谱反演一直是解释行星遥感观测的有力工具。灵活的,参数化的,不可知的模型与反演算法相结合,以直接从观测中推断大气特性,最大限度地减少对物理假设的依赖。这种方法最初是为应用于地球卫星数据和随后观测其他太阳系行星而开发的,最近已成功地应用于凌日、日食和凌日系外行星的相位曲线谱。在这篇评论中,我们提出了目前的国家的最先进的我们的能力,准确地检索有关大气化学,温度,云和空间变异性的信息,我们讨论了这方面的局限性,无论是在可用的数据和使用的建模策略,我们建议未来的改进方法。

英文摘要:

Spectral retrieval has long been a powerful tool for interpreting planetary remote sensing observations. Flexible, parameterised, agnostic models are coupled with inversion algorithms in order to infer atmospheric properties directly from observations, with minimal reliance on physical assumptions. This approach, originally developed for application to Earth satellite data and subsequently observations of other Solar System planets, has been recently and successfully applied to transit, eclipse and phase curve spectra of transiting exoplanets. In this review, we present the current state-of-the-art in terms of our ability to accurately retrieve information about atmospheric chemistry, temperature, clouds and spatial variability; we discuss the limitations of this, both in the available data and modelling strategies used; and we recommend approaches for future improvement.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑