W UMa-type stars BV Draconis and BW Draconis - Photoelectric observations

Details W UMa-type stars BV Draconis and BW Draconis - Photoelectric observations W UMa-type stars BV Draconis and BW Draconis - Photoelectric observations

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..60..173y&link_type=abstract

Astrophysics and Space Science, vol. 60, no. 1, Jan. 1979, p. 173-182. Research supported by the British Council.

Astronomy and Astrophysics

Astrophysics

22

Eclipsing Binary Stars, Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Astronomical Photography, Electrophotometers, Light Curve, Tables (Data)

Scientific paper

Photoelectric UBV observations of two W UMa-type stars, BV Dra (ADS 9537A) and BW Dra (ADS 9537B), are presented. New periods and epochs of minima are given for both variables, and magnitudes at maximum light are determined from standard star observations. It is concluded that these variables are quite normal W UMa stars. The two variables are members of the visual binary star ADS 9537, for which the angular separation and the position angle are determined from the photographic observations.

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