Open Access
Fig. B.1
Abundance of gas-phase methanol as a function of H density (in cm−3) in the case of the model starting with initial abundances of zero, 10−3, and 10−2. Two times are shown: 3.6 × 105 and 6 × 105 yr. The points are the observed abundances as described in the text. In all cases, all the desorption mechanisms were included.
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