Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985acaps...5...26z&link_type=abstract
(Acta Astrophysica Sinica, vol. 5, no. 1, 1985, p. 26-35) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 9, June 1985
Astronomy and Astrophysics
Astrophysics
Astronomical Photometry, Eclipsing Binary Stars, Electrophotometry, Light Curve, Main Sequence Stars, Mass Ratios, Radii, Stellar Evolution
Scientific paper
Photoelectric BV observations of the binary systems AT Cam and AZ Cam are presented. The O-C diagram of the times of light minimum of AT Cam shows a probable long period variation. Photometric solutions are obtained for both AT Cam and AZ Cam using the Wilson-Devinney method, and the results are compared. It is shown that both stars are detached systems, but the individual stellar components appear to be close to the critical surfaces. Calculations of the mass ratio of AT Cam yielded two possible solutions, q = 0.60 and q = 3.65, both of which were associated wiith a detached configuration. The mass ratio obtained for AZ Cam, q = 1.52, suggests the presence of a partial occultation having an inclination angle of about 80.5 degrees. The evolutionary stages of the stars are discussed on the basis of the mass-ratio calculations.
Leung Ka Chun
Zhai Di-Sheng
Zhang Jin-Ting
Zhang Rong-Xian
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