A revised helium chemistry network identifies Penning ionization of hydrogen and the stellar spectral energy distribution as key controls on the He I 1.08 micron transit signal at GJ 436 b, bringing predictions closer to observed non-detections.
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Modelling helium in exoplanet atmospheres. A revised network with photoelectron-driven processes
A revised helium chemistry network identifies Penning ionization of hydrogen and the stellar spectral energy distribution as key controls on the He I 1.08 micron transit signal at GJ 436 b, bringing predictions closer to observed non-detections.