论文标题
浓缩咖啡II的热海王星黄蜂166 B：确认大气中的钠
The Hot Neptune WASP-166 b with ESPRESSO II: Confirmation of atmospheric sodium
论文作者
论文摘要
海王星沙漠（Hot Neptune Desert）在海王星的大小范围内明显缺乏高度辐照的行星，仍然是系外行星种群研究最有趣的结果之一。对坐在边缘甚至海王星沙漠中的系外行星气氛的更深入了解将使我们能够更好地了解行星形成或进化过程是否处于沙漠的起源。先前在3.4 Sigma和Harps光谱仪的3.4 Sigma上介绍了WASP-166B中钠的检测。我们通过使用浓缩咖啡仪观察到的两个转移来更新这一结果，并确认了每晚的检测以及线条的扩展特征。该结果标志着海王星沙漠中首次确认的已解决的钠检测。在这项工作中，我们还强调了治疗低SNR光谱区域的重要性，尤其是在传播中部恒星钠和行星钠重叠的吸收线 - 对系统将来观察到的重要警告。
The hot Neptune desert, a distinct lack of highly irradiated planets in the size range of Neptune, remains one of the most intriguing results of exoplanet population studies. A deeper understanding of the atmosphere of exoplanets sitting at the edge or even within the Neptune desert will allow us to better understand if planetary formation or evolution processes are at the origin of the desert. A detection of sodium in WASP-166b was presented previously with tentative line broadening at the 3.4 sigma with the HARPS spectrograph. We update this result with two transits observed with the ESPRESSO spectrograph, confirming the detection in each night and the broadened character of the line. This result marks the first confirmed resolved sodium detection within the Neptune desert. In this work, we additionally highlight the importance of treating low-SNR spectral regions, particularly where absorption lines of stellar sodium and planetary sodium overlap at mid-transit - an important caveat for future observations of the system.
