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Fig. 7


Local stability criteria for dust grains (left panel) and planetesimals (central panel) and growing dust grains (central and right panel) as a function of the radius in the disc, assuming various surface density slopes: pdust = 0.5 (blue dashed line), pdust = 1 (red full line), pdust = 1.5 (green dash-dotted line). qloc is defined as −dlog (T(r)) /dlog (r).

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