Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975mnras.170..379l&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 170, Feb. 1975, p. 379-392.
Astronomy and Astrophysics
Astronomy
5
Binary Stars, Optical Properties, Stellar Spectra, Variable Stars, X Ray Stars, Astronomical Models, Emission Spectra, Light Curve, Line Spectra, Mass Ratios, Stellar Mass, Stellar Radiation, Stellar Temperature, X Ray Astronomy, X Ray Binaries
Scientific paper
This paper derives a correlation between the period and the optical visibility of a hot spot on an accretion disk in a close binary system. X-ray binaries and rapid blue variables are considered. It is suggested that the emission line features and secondary pulses might be used to detect the existence of faint hot spots. In principle these observable features might be used to determine the mass ratio of the system and the relative size of the accretion disk. Possible sources of error, caused by uncertainties in the observation, are discussed. For the HZ Her-Her X-1 system, the mass ratio is estimated and an explanation is given for the observed marching of the dips in the X-ray light curve.
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