Modeling results and observations of DoAr44 of the dust surface density, comparing δdustcav ranging between 10^-2 and 10^-4 as indicated in the right panel. The observations are plotted in black. Left: spectral energy distribution. Middle left: amplitude of the 345 GHz continuum visibility for the deprojected baselines. The null line is indicated with a dashed line. Middle right: Normalized intensity cuts through the major (bottom) and minor (top) axis of the 345 GHz continuum image. The model images are convolved with the same beam as the ALMA observations. Right: The dust surface density profile. Indicated are the δ_dust, the drop in density to fit the inner disk through the near-infrared emission, and δ_dustcav, the minimum drop in dust density inside the cavity needed to fit the observations.