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Fig. 5

image

Radial profiles of the abundance adopted for the radiative transfer model of the lines of SO2. We tested three different radial profiles: (i) an inner distribution of SO2 with f(SO2) = 3 × 10-6 between 1–8 R (red line); (ii) a constant radial profile with f(SO2) = 2 × 10-6 between 8–640 R (blue line); and (iii) a two component profile (green line) which includes an inner warm component plus an extended component of SO2. The results of the different models are shown in Fig. 11.

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