Illumination in binaries
Astrophysics
2009-10-28 v1
Abstract
We give a simple, but accurate method that can be used to account for illumination in compact binary systems which have a low-mass companion, even if spherically symmetric illumination of the secondary star (not necessarily on the main sequence) is not assumed. This is done by introducing a multiplicative factor Phi in the Stefan-Boltzmann surface boundary condition, which accounts for the blocking of the intrinsic secondary flux by X-ray heating of the photospheric layers. Numerical fits and tables for Phi are given for unperturbed effective temperatures in the range 2500 - 5600 K and log g in the range 1.0 - 5.0
Keywords
Cite
@article{arxiv.astro-ph/9610011,
title = {Illumination in binaries},
author = {J. -M. Hameury and H. Ritter},
journal= {arXiv preprint arXiv:astro-ph/9610011},
year = {2009}
}
Comments
5 pages, 3 figures. Accepted for publication in Astronomy and Astrophysics Supplement Series