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Fig. 8


OCS, H2S, CS, SO and SO2 abundance (/H) profiles as a function of radius from the center in the envelope of IRAS 18264. Initial composition of Model 2 is used. Integrated times is 104 yr. Three different turbulent diffusivity κ are used for each panel: 2 × 1014 cm-2 s-1 for the upper panel, 2 × 1016 cm-2 s-1 for the panel in the middle and 2 × 1018 cm-2 s-1 for the lower panel.

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