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arXiv · 1703.07821

Change in the Orbital Period of a Binary System Due to Dynamical Tides for Main-Sequence Stars

S. V. Chernov
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Abstract

We investigate the change in the orbital period of a binary system due to dynamical tides by taking into account the evolution of a main-sequence star. Three stars with masses of one, one and a half, and two solar masses are considered. A star of one solar mass at lifetimes $t=4.57\times10^9$ yr closely corresponds to our Sun. We show that a planet of one Jupiter mass revolving around a star of one solar mass will fall onto the star in the main-sequence lifetime of the star due to dynamical tides if the initial orbital period of the planet is less than $P_{\rm orb}\approx2.8$ days. Planets of one Jupiter mass with an orbital period$P_{\rm orb}\approx2$ days or shorter will fall onto a star of one and a half and two solar masses in the mainsequence lifetime of the star.

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S. V. Chernov. 2017-03-22. Change in the Orbital Period of a Binary System Due to Dynamical Tides for Main-Sequence Stars. https://doi.org/10.1134/s1063773717030033

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