TEMPERATURE DISTRIBUTIONS ON THE SURFACES OF CLOSE BINARY STARS

Close binary stars are assumed to be opaque, blackbodies with limb darkening. The increase of temperature due to radiative transfer between the components is calculated employing realistic geometry of spheres. The method is valid both for the regions of full illumination and for the penumbras. The computations employ iterative techniques and allow for variations of six parameters, two each of radius, temperature, and limb darkening. Some of the results are compared with those of previous models and calculations. These temperatures will be useful to predict the variation of the monochromatic reflection effect with phase and with the abovementioned parameters.