Absolute Dimensions and Masses of YY Sagittarii and V526 Sagittarii

Details Absolute Dimensions and Masses of YY Sagittarii and V526 Sagittarii Absolute Dimensions and Masses of YY Sagittarii and V526 Sagittarii

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....113.1091l&link_type=abstract

Astronomical Journal v.113, p.1091

Astronomy and Astrophysics

Astronomy

12

Scientific paper

Accurate masses and radii have been determined from new spectroscopic observations and previously published photometric orbits of YY Sgr (B5 +B6) and V526 Sgr (B9.5 +A2), two Southern eclipsing binaries with eccentric orbits and measured apsidal rotation. The measured properties, including apsidal rotation rate, are compared with recent theoretical predictions. The models indicate ages near 30 million and 200 million years for YY Sgr and V526 Sgr, respectively. The agreement between theory and observations is not entirely satisfactory for V526 Sgr.

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