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《科学》 第393卷 第6815期 · 2026年9月3日 · 中文解读

邻近宜居带岩石系外行星大气中的氦逃逸

Helium escaping from the atmosphere of a nearby rocky exoplanet orbiting in a habitable zone · Collin Cherubim, Shreyas Vissapragada, Tim Cunningham, Annabella G. Meech, David Charbonneau, Robin Wordsworth, Aaron Householder, Johanna Teske, Leonardo A. Dos Santos, Nicole L. Wallack, William Misener, Zifan Lin, Andrew McWilliam, Michael Zhang, Jason A. Dittmann, Mercedes López-Morales
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本文报告了对邻近低质量恒星宜居带内的岩石系外行星LHS 1140b的近红外光谱观测，发现其大气中存在氦逃逸，且逃逸具有时间变化性。
原文开头
Collin Cherubim1,2*, Shreyas Vissapragada3, Tim Cunningham2, Annabella G. Meech2, David Charbonneau2, Robin Wordsworth4,1, Aaron Householder5,6, Johanna Teske3,7, Leonardo A. Dos Santos8,9, Nicole L. Wallack7, William Misener7, Zifan Lin10,11, Andrew McWilliam3, Michael Zhang12, Jason A. Dittmann13, Mercedes López- Morales8 Observations of highly irradiated gas giant exoplanets have shown helium escaping from their atmospheres. there is limited evidence for atmospheres on rocky exoplanets, perhaps because they have already escaped. We report near- infrared spectroscopic observations of LHS 1140b, a rocky exoplanet that orbits in the habitable zone of a nearby low- mass star. the transit spectra show absorption by helium escaping from the planet’s atmosphere. Helium absorption is detected in 2024 but not in 2025, indicating time- variable atmospheric escape. …
摘自《科学》（Science）第393卷 第6815期 · 2026年9月3日，Collin Cherubim, Shreyas Vissapragada, Tim Cunningham, Annabella G. Meech, David Charbonneau, Robin Wordsworth, Aaron Householder, Johanna Teske, Leonardo A. Dos Santos, Nicole L. Wallack, William Misener, Zifan Lin, Andrew McWilliam, Michael Zhang, Jason A. Dittmann, Mercedes López-Morales。仅引用开头一小段供了解文章，版权归原刊所有，全文请阅读原刊。
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