3 papers
astro-ph.EP2026
Atmospheric escape fractionates secondary but not primary atmospheres
Mara Attia, Tim Lichtenberg
A planet's atmosphere, heated by starlight, can flow off as a wind, taking some gases and leaving others in unknown proportions. Yet this selection wrote the noble-gas records of t…
astro-ph.EP2026
Reflation: redox-driven atmospheric inflation as tracer of super-Earth geochemistry
Lorenzo Cesario, Tim Lichtenberg, Mara Attia +3
We demonstrate that the redox-sensitivity of mantle outgassing can trigger transient episodes of atmospheric re-inflation in highly irradiated and geochemically-reduced super-Earth…
astro-ph.EP2026
The panchromatic JWST dayside spectrum of WASP-121 b reveals a refractory-rich formation
K. Angelique Kahle, Paul Mollière, Laura Kreidberg +16
One path to understand how planets form is to link their present-day atmospheric composition to predictions from planet formation models. For the hottest planets, the abundances of…