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Fig. A.2

image

Results for the T Tauri reference model with  artificially large PAH abundance (fPAH = 10), showing independent results from ProDiMo, MCMax and MCFOST with PAHs in radiative equilibrium. The upper left figure shows the well-mixed dust and neutral PAH opacities. ProDiMo opacities are shown by lines, separately for dust (black = extinction, red = absorption, blue = scattering) and PAHs (green, only absorption), MCMax and MCFOST opacities are shown by dots (combined dust+PAH opacities). The upper right figure shows the computed SEDs with a zoom-in on the prominent PAH emission features at 3.3 μm, 6.2 μm, 7.6 μm, 8.6 μm, 11.3 μm and 13.5 μm. The lower left plot shows the assumed gas densities ρgas (black) and derived (settled) dust densities ρdust (red) for a series of vertical cuts at radius r as labelled. The PAH densities are given by ρPAH ≈ 0.00132 × ρgas for fPAH = 10. The lower middle and lower right plots compare the computed dust and PAH temperatures betweenMCMax (green), MCFOST (blue), and ProDiMo (black).

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