Period distributions obtained from model M2 for disk (red) and diskless (gray) stars. Outlined in blue is the period distribution for all stars (disk + diskless). In the top panels we show the distributions at t = 1 Myr, in the central panels those at 2.1 Myr, and in the bottom panels the distributions at 12.1 Myr. At the left, the period distribution are shown on a linear scale, at the right, the abscissa is given in log units.