CHAIN model Archives - Astrobiology

Left: Radiative cooling rates for TOI-238 b: the H-He atmosphere with solar metallicity (top panel) and the atmosphere enriched in metals 200 times over solar metallicity (bottom panel). The plot format matches that of Fig. 2. Center: Volume heating rates for TOI-238 b: the H-He atmosphere with solar metallicity (top panel) and the atmosphere enriched in metals 200 times over solar metallicity (bottom panel). The plot format matches that of Fig. 3. Right: Population of hydrogen species and heavy (metal) ions: the H-He atmosphere with solar metallicity (top panel) and the atmosphere enriched in metals 200 times over solar metallicity (bottom panel). The plot format matches that of Fig. 4. -- astro-ph.EP

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Ice Giant, Imaging & Spectroscopy, Status Report

Escape Of Water- And Metal-enriched Atmospheres From Compact Hot mini-Neptunes With CHAIN

by Keith CowingJune 3, 2026June 3, 2026

Recent observations reveal that atmospheric compositions of close-in sub-Neptunes are diverse and can differ strongly from pure H/He-dominated.