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Fig. 2


The mass distribution at t = 1, 10, 100, 316, 103 and 104 yr for the DD model. The x axis is the mass of the aggregates in grams, the y axis is the height above the midplane expressed in units of the pressure-scale height. The contours represent the normalized mass density of the dust. The subfigures illustrate the dust-to-gas ratio (x axis) as a function of height above the midplane (y axis).

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