Fig. 6
Radial velocity distribution for our sample of stars with M < 0.25 M⊙. For the most probable binaries we plot the mean values of the two components (Table 2). The Gaussian fit of the distribution yields a mean Vrad of 24.87 km s-1 (with a 
of 2.74 km s-1), which is fully consistent with the membership in the ONC (e.g., Stassun et al. 1999).
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