Fig. G.1

CO abundance as function of temperature under inner disk conditions. Black points show theresults from the chemical model in DALI under conditions relevant for the inner disk (n = 1012–1014 cm−3, 104 –1010G0 radiation field). Blue line show the results from equilibrium chemistry for the same range of densities (Chemical Equilibrium with Applications, Gordon & McBride 1994; McBride & Gordon 1996).
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