Fig. 11

Distribution of the absolute difference in logarithmic age | Δ log τ | for the ONC binaries of our extended sample in comparison with the distribution derived for binaries in Tau-Aur and Oph using the PS99 (continous line) and S00 (dotted line) PMS tracks. The rms scatter in | Δ log τ | for both set of tracks are indicated by red lines. The rms of the | Δ log τ | distribution and its uncertainty are reported for each set of tracks and each sample.
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