Tidal evolution of close binary stars. I - Revisiting the theory of the equilibrium tide

Details Tidal evolution of close binary stars. I - Revisiting the theory of the equilibrium tide Tidal evolution of close binary stars. I - Revisiting the theory of the equilibrium tide

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...220..112z&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 220, no. 1-2, Aug. 1989, p. 112-116.

Astronomy and Astrophysics

Astrophysics

220

Binary Stars, Stellar Evolution, Tides, Turbulence Effects, Mixing Length Flow Theory, Stellar Envelopes, Viscosity

Scientific paper

The theory of the equilibrium tide in stars that possess a convective envelope is reexamined critically, taking recent developments into account and treating thermal convection in the most consistent way within the mixing-length approach. The weak points are identified and discussed, in particular, the reduction of the turbulent viscosity when the tidal period becomes shorter than the convective turnover time. An improved version is derived for the secular equations governing the dynamical evolution of close binaries of such type.

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