Abstract
From the observed light curves of six eclipsing binaries with solar-type activity and from the analysis of their period variations some problems in the interpretation of the observations came out:
Are these binaries similar to classical RS CVn stars?
Is the stellar surface spot coverage the unique interpretation of the observed light curves?
Are these systems really linked with W UMa's?
In a further study some models will be tempted to try to solve these problems.
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Milano, L., Mancuso, S., Vittone, A. et al. Observed photometric peculiarities of six eclipsing binaries with solar-type activity: I. Astrophys Space Sci 124, 83–100 (1986). https://doi.org/10.1007/BF00649751
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DOI: https://doi.org/10.1007/BF00649751