Summary
A statistical study of physical pairs from IDS catalogue has been performed. For 2811 binaries with luminosity class V primaries it has been found that their mass function is a Salpeter one; their distribution over semi-major axes of orbits is dN ∝ d loga. The rate of duplicity of stars is close to 1.
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Vereshchagin, S., Kraicheva, Z., Popova, E. et al. Statistical study of visual binaries. Astrophys Space Sci 142, 245–254 (1988). https://doi.org/10.1007/BF00656217
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DOI: https://doi.org/10.1007/BF00656217