Correlation of the mass accretion rate and the X-ray luminosity with the stellar mass. Left: mass accretion rate vs. stellar mass for young stars in the ONC. The accretion data and the masses are taken from Manara et al. (2012). The dashed line shows a single power-law fit for all objects with masses ≤ 2.0 M_⊙. The solid line indicates the fitting result for the mass range 0.2 ≤ M ≤ 2.0, and the shaded region is its 1-σ deviation from the data. The cross indicates the typical uncertainty of the values. Right: same but for the X-ray luminosities taken from Getman et al. (2005a). The fitting parameters are listed in Table 2.