Fig. 4

Time evolution of the gas surface density radial profiles assuming the existence of a dead zone for a flared disk (top panel) and a flat disk (bottom panel). Simulations corresponding to a disk of Md = 0.1 M⊙ using Rin - dz = 2.7 au, Rout - dz = 20 au, αback = 10-3, and αdz = 10-5. Simulations are stopped after 5 Myr of viscous disk evolution.
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