Left panel: maximum dust grain size amax as a function of the disk radius. Right panel: dust opacity spectral index β between 0.88 and 8 mm as a function of the disk radius. Both panels: the solid black line with the shadowed blue area represent the best-fit and the 3σ region constrained by our multiwavelength analysis. The yellow shaded area represent the 3σ region obtained by Pérez et al. (2012). The vertical dashed lines represent the spatial resolution of the observations.
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