BV DRA and BW DRA - Two contact systems in one visual binary

Details BV DRA and BW DRA - Two contact systems in one visual binary BV DRA and BW DRA - Two contact systems in one visual binary

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ap%26ss..88..433r&link_type=abstract

Astrophysics and Space Science, vol. 88, no. 2, Dec. 1982, p. 433-452.

Astronomy and Astrophysics

Astrophysics

24

Binary Stars, Light Curve, Stellar Spectrophotometry, Main Sequence Stars, Starspots, Stellar Mass, Ubv Spectra

Scientific paper

UBV light curves obtained in 1975 for both components of ADS 9537, as well as Yamasaki's (1979) light curve for BV Dra, are solved for geometrical parameters using the synthesis method under two hypotheses which explain the W-subclass light curves. These hypotheses respectively involve the temperature excess of the less massive components and spots on the more massive components, and are found to yield similar results. Existing data on other contact binaries in multiple visual systems are discussed, and it is noted that the contact binaries seem to follow the same statistical distributions for occurrence in multiples as found for detached binaries, but severe selection effects limit detectability in multiple systems for wide orbits having semiaxes below 100 AU.

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