Results of fitting to the 1.3 mm and 3.0 mm images for model 1 (left column) and model 2 (right column). For model 1, the best-fit a_max and ∑_dust are indicated with the solid cyan lines in panels a and b, respectively, whereas the dashed red lines refer to the reference profiles convolved with a same beam (i.e., 0.05″) to that of the synthetic images. The gray color scale represents the probability distribution of parameter values returned from fitting the 5000 randomly generated intensity profiles (see Sec. 3). The vertical bar marks the typical confidence interval of the best-fit parameter set. In panels c and d, the reference profiles of intensity and spectral index are shown with dashed lines, while the best-fit results are indicated with solid lines. Panels e–h present the results for model 2.