DOI: https://doi.org/10.18524/1810-4215.1996.9.109064

PREDICTION OF THE COMPONENTS MASS RATIOS AND THE SPECTRAL CLASSES OF THE MAIN COMPONENT FOR W UMa-TYPE ECLIPSING VARIABLE STARS

E. M. Svirskaya, A. Yu. Shmelev

Анотація


The new approach to estimation of components mass ratios for close binary systems is suggested. 225 unknown from spectroscopic observations magnitudes of mass ratios for W UMa-type contact binaries are restored by statistical method ZET. 204 magnitudes of the spectral classes of the main component for this type systems are defined by analogous way. The evolutionary types of some stars are specified as a matter of record. ZET-method efficiency for predict these characteristics of W UMa-type contact systems is shown.


Ключові слова


Stars: Binaries; Contact; Component mass ratios; ZET method

Повний текст:

PDF

Посилання


Svechnikov M.A.: 1986, A Cataloge of orbital elements, masses and luminosities of close double stars (in Russian), Irkutsk, Irkutsk University, 225

Svechnikov M.A., lstomin L.F., Grekhova O.A.: 1980, Peremennye zvezdy, 21, N3. 399

Svechnikov M.A., Kuznetsova E.F.: 1990, A Catalogue of approximate photometric and absolute elements of eclipsing variable stars.(in Russian),Sverdlovsk: Ural University, 1, 224, 2, 232

Webbink P.E: 1991, A Catalogue of potentially bright close binary gravitational wave sources. Department of Astronomy University of Illinois Urbana, Illinois. 61801.

Zagoruiko N.G., Elkina V.N., Lbov G.S.: 1985, Algorithms of finding the empiric regularities. (in Russian),Novosibirsk, Nauka Publ., 110




Copyright (c) 2017 Odessa Astronomical Publications

Creative Commons License
Ця робота ліцензована Creative Commons Attribution-NonCommercial 4.0 International License.