Fig. 8
Temporal evolution of the partial surface pressures Psurf of H, O, and CO2 normalized to the total initial surface pressure Ptotal for a catastrophically outgassed atmosphere as discussed in (Lebrun et al. 2013). The hydrogen inventory evolves assuming a constant escape rate of ~ 7 × 1032 s-1 valid for 100 XUV. Both O and even CO2 molecules are dragged along with the escaping H atoms.
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