Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..241m&link_type=abstract
SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret
Astronomy and Astrophysics
Astrophysics
Scientific paper
In this work, we present new theoretical advances in the modelization of the equilibrium tide in the convective envelope of solar-type binary stars. We take into account the two-dimensional character of the rotation law in the convection zone and the inclination of the spin of each component with respect to the orbital one. Following the method of Zahn (1966) we first derive the adiabatic tide which is in phase with the perturbing potential exerted by the companion. Next, we derive the dissipative tide which is in quadrature with it, using the crude MLT eddy-viscosity to modelize the action of turbulence on the large scale tidal flow. Finally, we discuss the impact of those processes on the dynamical evolution of binary systems. Note that our results may be applied as well to giant planets and to exo-planets, since these possess also a convection zone.
Mathis Stephane
Zahn Jean-Paul
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