He I λ10 830 transmission spectroscopy: A new window on the dynamics of planetary atmospheres

行星大气已成为天文学研究的热点。透射光谱学是研究它们的有力工具。在这种情况下，特别令人感兴趣的是He I 10830三重线，因为它们允许从地面研究外行星大气，包括行星风。因此，我建议对He I 10830透射光谱进行全面的观测和理论研究。到目前为止，大约有六种系统采用了He I 10830线传输信号。它们的强度似乎与主星的活动水平有关。对He I 10830线的许多观测已经使我们能够研究线的轮廓和位移，使我们能够更详细地分析行星大气的动力学。我们在这项工作中发挥了主导作用，我打算在观测上研究更多的系统。然而，更多的观测并不能解决信号解释中的所有问题。特别地，地球的大气层和凌日恒星的大气层所造成的影响会对透射光谱产生不利的影响。因此，我将彻底检查这些影响，以评估它们对He 10830信号解释的影响。我的项目可以让我把几个领域的经验结合起来。它完全符合SPP的资助指导方针，并受益于被纳入SPP的科学界。

Planetary atmosphere have become a focus of astronomical research. Transmission spectroscopy is a powerful tool to study them. Of particular interest in this context are the He I 10830 triplet lines, because they allow to study the outer planetary atmosphere, including planetary winds, from the ground. Therefore, I propose a comprehensive observational and theoretical study of He I 10830 transmission spectra. To date, about a half a dozen system with He I 10830 line transmission signals are known. Their strengths appears to correlate with the activity level of the host star. Many observations of the He I 10830 lines already enable us to study line profiles and shifts, allowing us more detailed analysis of the dynamics of the planetary atmosphere. We played a leading role in this effort, and I intend to study more systems observationally. However, more observations will not resolve all problems in the interpretation of the signals. In particular, effects caused by the atmosphere of the Earth and that of the star, which is transited, can adversely affect the transmission spectra. Therefore, I will thoroughly examine these effects to assess their impact on the interpretation of the He I 10830 signals. My project allows me to combine experience in several fields. It is fully consistent with the SPP funding guidelines and benefits from being incorporated into its scientific community.