Fig. 8

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Abundance profile of SO (solid) and SO2 (dashed) for the fiducial model (blue) with a PAH abundance of 10−8 using a grainsize of 0.2 μm. Overplotted are the same model using a typical ISM grain size of 0.03 μm (orange) anda model with a PAH abundance of 10−6 (green). All other parameters are kept at their fiducial value (see Table 1).
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