The W UMa Stars AB Tel and BF Pav

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Scientific paper

The two W UMa stars AB Tel and BF Pav have been observed by Hoffmann (1984) but he has not been able to undertake a detailed analysis of the light curves due to incompleteness in the data (Hoffmann, 1980, 1981). These two stars were included in a programme of photometry of W UMa stars that was commenced at SAAO, but in this case also the light curves are incomplete and cannot be analysed. The results are therefore discussed here in general terms in the light of Hoffmann's conclusions, and times of minima are presented which may be used in studying period changes in these stars. The BV observations of AB Tel and BF Pav, which will be presented elsewhere, were obtained with the St Andrews Photometer on the 1.0 m telescope at SAAO, Sutherland and have been transformed on to the standard system through observations of E-region stars (Menzies et al 1980). The comparison and check stars, all of which were constant to less than 0.01 mag over the periods of the observations, and their adopted magnitudes are listed in Table I.

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