PROPERTIES OF THE SUBGIANTS IN THE ECLIPSING BINARY SYSTEMS OF DIFFERENT TYPES

Автор(и)

  • V. G. Karetnikov Astronomical Observatory, Odessa State University, Ukraine

DOI:

https://doi.org/10.18524/1810-4215.1996.9.108986

Ключові слова:

stars, eclipsing binary stars, subgiants.

Анотація

The properties of subgiants from eclipsing binary systems are considered. The necessity of their dividing into different groups on masses and orbital periods is suggested. It allows to find the significant correlations between the main characteristics of supergiants and the corresponding systems’ characteristics. It is shown that low-mass subgiants from short-period systems quickly lose the mass. They possess the largest temperature and radii excesses, but with mass and period increasing the temperature excesses are replaced by the temperature deficiency, which are maximal for massive subgiants of AR-systems.

Посилання

Crawford J.A.: 1955, ApJ, 68, 880.

Iben I. Jr.; Tutukov A.V.: 1984, Ap.JS., 54, 335.

Karetnikov V.G.: 1990; Astron, Zh., 67, 885.

Karetnikov V.G.: 1991, Astron, Zh., 68, 880.

Karetnikov V.G.: 1990, Astron, Circ, N 1542, 17.

Karetnikov V.G., Andronov I.L: 1989, Statistical properties of eclipsing binary Stare on the first Stage of the mass exchange, Preprint UkrNIINTI, N 2629-89.

Masevich A.G., Tutukov A.V.: 1988, Stellar evolution: theory and observations, Nauka.

Mongol J.G., Sweigart A.V., Demarque P., Gross P.G.: 1979, ApJS, 40, 733.

Shain G.A.: 1928, MNRAS, 88, 123.

Svechnikov M.A.: 1986, The catalogue of the orbital elements, masses anal luminosities of close binary stars. Irkutsk.

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2017-08-21

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