Distribution of planetary luminosities during the evolutionary phase at 10, 50, 100 Myr and 1 Gyr. The cold-nominal (blue solid), the hot (red dashed), and the cold-classical population (black dotted line) are shown. All these populations have similar mass distributions (except for an certain absence of the most massive planets in the cold-classical population) such that the different luminosity distributions are a consequence of the different entropies, and not masses, of the planets in the three populations. The peak at around log (L/L_⊙) = −6 in the cold-nominal population clearly distinguishes this population from the other two.