Ejection rates of planet as a function of the semi-major axis of the planet (a_p) orbiting each spectral type of star at t = 170 Myr for the embedded-cluster model and at t = 600 Myr for the other models. Error bars indicate run-to-run variations (standard deviations). Dashed curves are the fitting function given by Eq. (10). We classify stellar spectral types according to stellar mass as follows: M: 0.08 < m < 0.45, K: 0.45 < m < 0.8, G: 0.8 < m < 1.04, F: 1.04 < m < 1.4 A: 1.4 < m < 2.1, and B: 2.1 < m < 16, where m is the mass of the (planet-hosting) star in units of M_⊙.