Mass accretion versus stellar mass for all significant emitters of the sample (filled symbols) and upper limits to all other targets with measured Ṁ_acc and M _∗  (open symbols). Primaries are marked with circles, secondaries with diamonds. Asterisks show the mass accretion rates of single stars in Orion (Robberto et al. 2004), whereas plus signs and upper limits are binary components in Taurus (White & Ghez 2001).