Same as Fig. 3 but for different aspect ratios, with α = 10⁻³. As in Fig. 2, we note at the top of each row the difference in kinematic viscosity caused by the change in the disk’s aspect ratio. Here the mass ratio evolutions differ in amplitude, but they present the same behavior as in Fig. 3. The difference in amplitude originates from the direct dependence of the accretion routine on the aspect ratio, and not on the α-viscosity (see Eq. (2)).