Atmosphere Escape Inferred from Modeling the Hα Transmission Spectrum of WASP-121b

The escaping atmospheres of hydrogen driven by stellar X-ray and extreme ultraviolet (XUV) have been detected around some exoplanets by the excess absorption of Ly α in the far-ultraviolet band. In the optical band the excess absorption of H α is also found by ground-based instruments. However, it i...

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Veröffentlicht in:	Astrophysical journal. Letters 2021-02, Vol.907 (2), p.L47
Hauptverfasser:	Yan, Dongdong, Guo, Jianheng, Huang, Chenliang, Xing, Lei
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption Atmosphere Atmospheric models Extrasolar planets H alpha line High temperature Hydrogen Hydrogen atoms Irradiation Observation times Planetary winds Radiative transfer Stellar activity Upper atmosphere
Online-Zugang:	Volltext
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