53
520
521
523
524
52-1
52-6
41.00
29.35
29.31
29.33
29.27
29.05
03.06.01
03.05.01
03.04.03
2
223
614
6135
SCI004000
SCI005000
The observational data on 58 pre-main sequence (PMS) double-lined spectroscopic binaries (SB2) and 115 stars with protoplanetary disks are compiled for statistical investigation. These stars are located in different star-forming regions. The constructed distributions of young stars by component masses, taking into account the effects of observational selection (discovery probability and/or occupied volume), are approximated with a power law $dN \sim M^{-\Gamma} d\log{M}$. The slopes are determined on the interval from the maximum of the distributions to the largest mass value and are equal to $\Gamma= 0.92 \pm 0.23$ for the components of SB2 systems and $\Gamma = 1.51 \pm 0.30$ for the stars with disks, respectively, which are close to the Salpeter's mass function. The most probable values of the mass are $M_p= 0.48 \pm 0.02$ $M_{\odot}$ for stars with protoplanetary disks and $M_p= 0.95 \pm 0.05$ $M_{\odot}$ for SB2 components.
stars: pre-main sequence, binaries: spectroscopic, mass function; methods: statistical
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