Maximum mass of planetesimals shepherded into the SSP without active planetesimal collisions M_max,shep as a functionof planetary mass M_p. Here, thecase is considered where the protoplanet migrates with the type II regime obtained by Kanagawa et al. (2018) (see Eq. (51)). The solid and dashed lines show the cases of <i> = 10⁻³ and 10⁻², respectively. The black and red lines are cases of massive disk with Σ_gas,0 = 1400 g cm⁻² and 800 g cm⁻², respectively. The parameters used in this plot are the optically thick disk of T₀ = 140 K, the disk viscosity α_vis = 10⁻³, the size of planetesimal R_pl = 10⁷ cm, and the planetesimal density ρ_pl = 1 g cm⁻³. The scaling parameter of the location of the SSP C is obtained as C = 17.