Eccentricity of embryos and planetesimals as a function of the semimajor axis at the 3.1 × 10^5th orbit at theinner edge. Panelsa and b: INT and a NON model, respectively, each initially with a 50/50 mass ratio, 100 embryos (black dots), and 4000 planetesimals (blue dots in the INT, purple dots in the NON model). Panelsc and d: NON models initially with 1000 planetesimals with 25 and 400 embryos, respectively. The size of black dots is proportionalto the one-third power of the embryo mass.