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Wide binary stars with non-coeval components

Malkov, Oleg; Kniazev, Alexey

We have the estimated masses of components of visual binaries from their spectral classification. We have selected pairs in which the less massive component looks more evolved. Spectral observations of some of these pairs were made, and at least one pair, HD 156331, was confirmed to have components of different ages. Since mass exchange is exclude…

Absolute magnitudes of white dwarfs and discovery of new white dwarfs from FBS Blue Stellar Objects by means of Gaia EDR3 data

Malkov, Oleg Yu.; Mickaelian, Areg M.; Mikayelyan, Gor A. +2 more

This article is a presentation of a project which is a statistical study of white dwarfs' properties carried out based on the sample of the First Byurakan Survey Blue Stellar Objects (FBS BSOs) and the Catalogue of White Dwarfs. Using these results, we have searched and will continue to search for new white dwarfs by means of Gaia accurate astrome…