Time evolution of the core’s mass in the in situ formation of a planet located near the outer edge of the dead zone. The planet is located at 16 au, 16.5 au, 17 au, and 17.5 au for planetesimals of 0.1 km, 1 km, 10 km, and 100 km of radius, respectively. Simulations correspond to a flat disk of M_d = 0.1 M_⊙ considering a disk with (black lines) and without a dead zone (red lines). When a dead zone is considered we use α_back = 10^-3, α_dz = 10^-5, R_{in - dz} = 2.7 au and R_{out - dz} = 20 au, while if the dead zone is not taken into account we use α = 10^-3 along the disk. Simulations end when the planet achieves the critical mass or after 5 Myr of viscous disk evolution.