The mass spectrum of the white dwarfs in cataclysmic binaries - Supplementary computations

Details The mass spectrum of the white dwarfs in cataclysmic binaries - Supplementary computations The mass spectrum of the white dwarfs in cataclysmic binaries - Supplementary computations

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...167..260r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 167, Oct. 1986, p. 260-264. Research supported by the University of Istanbul.

Computer Science

Numerical Analysis

4

Binary Stars, Cataclysmic Variables, Stellar Mass, White Dwarf Stars, Accretion Disks, Eclipsing Binary Stars, Limb Darkening, Numerical Analysis, Stellar Evolution

Scientific paper

Numerical computations supplementing those of Ritter and Burkert (1986) for the study of observational selection in favor of massive white dwarfs among cataclysmic binaries (CBs) are presented. In particular the contribution of CBs beyond the period minimum and the influence of the inclination and of limb-darkening of the accretion disk are investigated. It is found that: (1) the main conclusions of Ritter and Burkert remain unchanged; (2) neither the inclusion of CBs containing a black-dwarf secondary nor the variation of the inclination or limb-darkening change the selection significantly; (3) in a magnitude-limited sample, about 22 percent of the ultra-short-period CBs contain a degenerate secondary; (4) the mean inclination of the accretion disk in a magnitude-limited sample is always close to 60 deg; (5) the fraction of eclipsing systems is of order 10-15 percent at m(v) = 10.0; (6) the mean inclination and the fraction of eclipsing systems increases with the limiting magnitude; and (7) the intrinsic space density of CBs is n(CB) approximately .0001-.0002/cu pc.

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