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Contact binaries at the short period cut-off โ€“ I. Statistics and the first photometric investigations of 10 totally eclipsing systems

Contact binaries at the short period cut-off โ€“ I. Statistics and the first photometric investigations of 10 totally eclipsing systems

The period distribution of contact binaries exhibits a very sharp short period cut-off at 0.22 d. In order to provide valuable information on this short period limit, we observed 10 totally eclipsing contact binaries with orbital periods near this cut-off. By detailed analysis using the w-d code, we determined that โ€ฆ