Left panel: radial profile of the maximum dust grain size amax constrained from the multiwavelength fits. Right panel: radial profile of the dust opacity spectral slope β(R) between 1 mm and 10 mm. The dashed black horizontal line at βISM = 1.7 represents the typical value of β for small ISM dust grains. In both panels: the thick lines represent the median (i.e., the best-fit) model, and the shaded areas represent the 1σ credibility intervals. The best-fit model lines are plotted wherever the signal-to-noise ratio is higher than 3 (computed for the observation displaying the most extended disk emission); the shaded areas are truncated at half the average beam size (inner regions) and at (outer regions).
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