Abstract
Zahn’s theory of dynamical tides is analyzed critically. We compare the results of this theory with our numerical calculations for stars with a convective core and a radiative envelope and with masses of one and a half and two solar masses. We show that for a binary system consisting of stars of one and a half or two solar masses and a point object with a mass equal to the solar mass and with an orbital period of one day under the assumption of a dense spectrum and moderately rapid dissipation, the evolution time scales of the semimajor axis will be shorter than those in Zahn’s theory by several orders of magnitude.
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Original Russian Text © S.V. Chernov, 2017, published in Pis’ma v Astronomicheskii Zhurnal, 2017, Vol. 43, No. 6, pp. 474–482.
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Chernov, S.V. Zahn’s theory of dynamical tides and its application to stars. Astron. Lett. 43, 429–437 (2017). https://doi.org/10.1134/S1063773717060020
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DOI: https://doi.org/10.1134/S1063773717060020