Fig. 4

From top to bottom: midplane dust density, gas temperature of a vertical column of gas at 1 AU, and a vertical cut of the dust density at 1 AU. For comparison with the standard 0.018 and 1 Myr models, the same models (but with Dubrulle settling instead) are plotted to illustrate the effects of both dust settling and evolution on the mid-infrared regions.
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