Left part: synthetic images at 0.65 μm (polarised intensity, top panels) and at 850 μm (bottom panels) obtained after radiative transfer calculations using the dust density distributions obtained from models VI and VII (Fig. 5) at 0.5 Myr of evolution. Circles at 20 au in the left and 40 au in the right (assuming 140 pc distance) are also shown for reference. Right part: radial intensity profile at 850 μm from the model images of models V, VI, and VII at different times of evolution ([0.1,0.5,1] Myr).