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Fig. 6

image

Abundances of O2 (cyan), H2CO (red), H2O2 (pink), CH3OH (blue), and HO2 (green) in our model clouds taking into account the chemical desorption process (model cloud 1: lines) and without the chemical desorptions process (model cloud 3: dots). The horizontal lines show the observations of ρ oph A.

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