The RS Canum Venaticorum binary HD 116204

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Binary Stars, Stellar Spectrophotometry, Ubv Spectra, Visual Photometry, Light Curve, Mass Ratios, Stellar Color, Stellar Magnitude, Stellar Mass

Scientific paper

BV photometry of HD 116204 have been obtained on 57 nights during the 1983-1984, 1984-1985, and 1986-1987 observing seasons with the 34-cm reflector of the Vainu Bappu Observatory in Kavalur. A photometric period of 21.9 + or - 0.2 d and a mean (B-V) of 1.196 + or - 0.010 have been determined, and a mass ratio close to unity for HD 116204 is implied. The results suggest a vertical shift of the entire light curve towards brighter magnitudes and a low inclination of the rotation axis.

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