Top: dust structure of the fiducial DALI model from Fedele et al. (2017) with small (0.005–1 μm) and large (0.005–1000 μm) grains present only in the millimeter rings. Bottom: dust structure of the optimized DALI model with small grains in the millimeter gap and in the outer disk. The hot inner dust ring is not visible due to the extremely small scale height at r = 0.2 AU.
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