Comparative Analysis of ``Exact'' and ``Approximate'' Methods for Estimating the Absolute and Relative Elements of Detached Close Binary Systems

Details Comparative Analysis of ``Exact'' and ``Approximate'' Methods for Estimating the Absolute and Relative Elements of Detached Close Binary Systems Comparative Analysis of ``Exact'' and ``Approximate'' Methods for Estimating the Absolute and Relative Elements of Detached Close Binary Systems

Apr 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap.....47..175d&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 47, Issue 2, p. 175-188 (2004).

Astronomy and Astrophysics

Astrophysics

Binary Stars - Eclipsing Stars

Scientific paper

In this paper the star characteristics (luminosities, spectra, masses, absolute and relative radii of the components, mass ratio, major semiaxis, and orbital inclination) of close binary systems (CBS) with detached components are compared element-by-element. Svechnikov and Perevozkina's Catalog of the orbital elements, masses, and luminosities of pre-main sequence-type eclipsing variable stars with known photometric and spectroscopic elements and Svechnikov and Kuznetsova's Catalog of approximate photometric and absolute elements of eclipsing variable stars are used as initial data. The orbital elements contained in the first catalog are determined from solutions of the known photometric light curves and the known radial velocity curves, while the orbital elements for the second catalog were estimated using data from the General Catalog of Variable Stars (GCVS) IV employing approximate statistical relationships such as mass-radius, mass-luminosity, and mass-spectrum, along with the dependence of the orbital inclination on the depth of the principal minimum and others. Possible reasons for discrepancies among the compared quantities are discussed.

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