Accuracy of close binary mass determinations from parallaxes

Details Accuracy of close binary mass determinations from parallaxes Accuracy of close binary mass determinations from parallaxes

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.110..169v&link_type=abstract

(Deutsche Forschungsgemeinschaft, Universitaet Bamberg, Universitaet Erlangen-Nuernberg, and Victoria University of Manchester,

Astronomy and Astrophysics

Astrophysics

8

Accuracy, Eclipsing Binary Stars, Light Curve, Stellar Mass, Stellar Parallax, Error Analysis, Hipparcos Satellite, Mass Ratios

Scientific paper

Absolute masses for W Ursae Majoris and Algol-type close binaries can be determined from their parallax, if observed, and the relative sizes of the stars and their mass ratio, obtained from a light curve solution. An error propagation study compares the typical order of magnitude of the various terms involved, and shows how accurate parallaxes have to be in order to make the procedure work, i.e., making the parallax term not larger than the combined non-parallax terms, and producing reasonably low mass errors. Some comments are made on the possibilities with respect to the HIPPARCOS program.

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