Mathematics – Probability
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243...57b&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, March 1, 1990, p. 57-64.
Mathematics
Probability
27
Cataclysmic Variables, Eclipsing Binary Stars, Stellar Mass, Stellar Spectrophotometry, White Dwarf Stars, Accretion Disks, Charge Coupled Devices, Emission Spectra, Probability Distribution Functions, Radial Velocity
Scientific paper
The mass ratio for cataclysmic variables is studied using a statistical analysis of the eclipse durations in cataclysmic variables, assuming that the orbits are randomly oriented in space. The mean value of the mass ratio (M2/M1) for nine systems with periods below 0.09 d is 0.13 + or - 0.03. For 12 systems with periods above 0.13 d, the mean value is 0.65 + or - 0.12. Compares with mass determinations for individual systems, these results of this analysis tend to have too high a value for M2/M1 and too low a value for inclination. It is suggested that this is because the radial velocity amplitude of the emission lines was used to represent the motion of the white dwarf. Also, consideration is given to the characteristics of the system 1H 0709-360, which was not included in either the short-period or long-period groups studied.
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