Meridional circulation in rotating stars. II - Mean steady motions in rotationally and tidally distorted stars. III - The reflection effect in close binaries

Details Meridional circulation in rotating stars. II - Mean steady motions in rotationally and tidally distorted stars. III - The reflection effect in close binaries Meridional circulation in rotating stars. II - Mean steady motions in rotationally and tidally distorted stars. III - The reflection effect in close binaries

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...261..265t&link_type=abstract

Astrophysical Journal, Part 1, vol. 261, Oct. 1, 1982, p. 265-278.

Astronomy and Astrophysics

Astrophysics

17

Binary Stars, Meridional Flow, Stellar Envelopes, Stellar Rotation, Boundary Conditions, Boundary Layers, Perturbation Theory, Reflectance, Steady Flow, Tides, Velocity Distribution

Scientific paper

Steady currents in the turbulent radiative envelope of a chemically homogeneous, early-type star that is both rotationally and tidally distorted are described. Reporting only the main steps of the calculations, mean steady motions are obtained that are uniformly valid all the way from the core envelope to the free surface. Numerical results for a three solar masses Cowling point source model with electron-scattering capacity are presented. Steady meridional currents caused by the presence of a permanent 'hot spot' on the surface of an early-type star which is synchronously rotating, detached member of a close binary are discussed. The properties of the turbulent viscous boundary layer in which these superficial motions occur are analyzed. Numerical results are presented for a three solar masses model with electron-scattering opacity and radiative zero boundary conditions. Gross overestimates of the circulation velocities in previous studies are explained.

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