气体巨行星的雾霭晨曦与晚霞
地球与行星天体物理
2026-05-25 v2
摘要
星体大气的光谱受到不确定来源的气溶胶（云和雾）的影响。 proposed 的气溶胶形成机制包括气体凝结或光化学反应。我们测量了潮汐锁定的气体巨行星 WASP-94A b 的传输光谱，并识别出其大气中的不对称性。清晨侧的大气较冷且含有云，而傍晚侧的大气较热且显示出气态 H₂O 吸收特征。我们将这种差异解释为云滴在清晨侧附近形成，而在气体循环到傍晚侧时蒸发。主要气溶胶是云，在大气的日侧和夜侧之间循环，而非光化学雾。 resulting 的不对称性可能严重偏向化学丰度测量，除非可获得 limb 分辨率光谱。
引用
@article{arxiv.2505.10910,
title = {Cloudy mornings and clear evenings on a gas giant exoplanet},
author = {Sagnick Mukherjee and David K. Sing and Guangwei Fu and Kevin B. Stevenson and Stephen P. Schmidt and Harry Baskett and Mei Ting Mak and Patrick McCreery and Natalie H. Allen and Katherine A. Bennett and Duncan A. Christie and Carlos Gascón and Jayesh Goyal and Éric Hébrard and Joshua D. Lothringer and Mercedes López-Morales and Jacob Lustig-Yaeger and Erin M. May and L. C. Mayorga and Nathan Mayne and Lakeisha M. Ramos Rosado and Henrique Reggiani and Zafar Rustamkulov and Kevin C. Schlaufman and K. S. Sotzen and Daniel Thorngren and Le-Chris Wang and Maria Zamyatina},
journal= {arXiv preprint arXiv:2505.10910},
year = {2026}
}
备注
This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science on 21st May, 2026, DOI: 10.1126/science.adx5903