Synthetic P_rot, ⋆(t) and P_orb(t) estimated for a system composed of a 0.5, 0.7, and 1.0 M_⊙ star around which orbits a 2 M_jup planet (upper panel) and a 5 M_jup planet (lower panel). P_rot, init = 1−11 days (with ΔP_rot, init = 0.2 days) and SMA_init is between 0.1 and 1.0 R_co (Gallet et al. 2018). The color gradient indicates the age (in Myr) at which the pair P_rot, ⋆(t) − P_orb(t) is extracted. Only planetary systems where the planet is still orbiting the star are plotted. The blue lines (composed of plain circles) depict the evolution of a given star-planet system (P_rot, init = 10.8 days and SMA_init = 30%R_co) in the P_rot, ⋆(t) − P_orb(t) plane.