http://arxiv.org/abs/2208.04899
We have estimated masses of components of visual binaries from their spectral classification. We have selected pairs, where the less massive component looks more evolved. Spectral observations of some of such pairs were made, and at least one pair, HD~156331, was confirmed to have components of different age. Since mass exchange is excluded in wide binaries, it means that HD~156331 can be formed by the capture.
O. Malkov and A. Kniazev
Wed, 10 Aug 22
57/66
Comments: 6 pages, 2 figures. accepted to Open Astronomy