On the influence of radiation pressure on the light curve of HZ Herculis

Details On the influence of radiation pressure on the light curve of HZ Herculis On the influence of radiation pressure on the light curve of HZ Herculis

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....88..363k&link_type=abstract

Astronomy and Astrophysics, vol. 88, no. 3, Aug. 1980, p. 363, 364.

Astronomy and Astrophysics

Astrophysics

1

Binary Stars, Energy Transfer, Light Curve, Radiation Pressure, X Ray Stars, Perturbation Theory, Temperature Distribution

Scientific paper

The effects of the radiation pressure exerted upon the HZ Herculis primary by its X-ray companion on energy transfer and thus the light curve of the close binary system are estimated by means of a perturbation method. Perturbation equations are derived from the modified equation of hydrostatic equilibrium in a plane parallel approximation with the contribution of radiation pressure taken into account, and used to determine the flux carried to the dark (nonilluminated by X-ray flux) side. Comparison of the expression obtained with that derived by Kippenhahn and Thomas (1979) for the case without radiation pressure reveals that radiation pressure leads to a slight increase in the flux carried to the dark side.

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