Fig. 8
Chemical concentration profiles for species CH4, H2O, O3 and HNO3 in molecules per cm3 for scenarios 4.0−4.3 (see Sect.3.2) with the following CR-induced production mechanisms switched on: NOx+HOx (scenario 4.0, solid yellow curve), NOx (scenario 4.1, solid green curve), HOx (scenario 4.2, solid blue curve), NO (scenario 4.3, dashed green curve). Scenario 1 (M-dwarf w/o CR) is shown for comparison (solid black curve).
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