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Astron. Astrophys. 324, 1010-1012

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Research Note

Analysis of a photoelectric light curve
of the W UMa-type binary ST Ind

S. Zola1,2, M. Kolonko1, and M. Szczech1

1Astronomical Observatory of the Jagiellonian University ul. Orla 171, PL-30244 Cracow, Poland (zola@oa.uj.edu.pl)
2Mt. Suhora Observatory of the Pedagogical University, ul. Podchorazych 2, PL-30084 Cracow, Poland

Received 6 November 1996 / Accepted 3 March 1997


Modelling of Walter and Duerbeck's photoelectric observations of ST Ind is performed. The Wilson-Devinney model along with a Monte Carlo method as the search procedure, was used to derive the physical parameters of this contact system. One dark spot on the surface of the primary component was introduced to explain the observed difference in the heights of the maxima.

Key words: binary stars: eclipsing binaries - star-spots - individual: ST Ind

Send offprint requests to: S. Zola

© European Southern Observatory (ESO) 1997