Analysis of the dust continuum emission from the disk. Comparison of the dust emission observed with ALMA towards G023.01−00.41 (red dashed contours) with the modelled dust emission from a circumstellar disk around a 20 M_⊙ star (colours and white contours). The brightness scale of the modelled emission is quantified by the righthand wedge. The red dashed contours are plotted at steps of 10% of the observed peak emission, starting from 90%; the white contours draw the same absolute levels for the model. The reference system and symbols are the same used in the previous figures. The synthesized ALMA beams, for the observed (red filled circle) and modelled (white circle) dust continuum maps, are shown in the bottom left corner.