Period Changes of Contact Binaries in OGLE Database

Details Period Changes of Contact Binaries in OGLE Database Period Changes of Contact Binaries in OGLE Database

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aca....56..253k&link_type=abstract

Acta Astronomica, Vol. 56, pp.253-265

Astronomy and Astrophysics

Astronomy

4

Binaries: Close, Binaries: Eclipsing

Scientific paper

Presented are results of determination of secular period changes for 569 contact binaries from the OGLE database with periods shorter than about one day and observations spanning 14 observing seasons. The statistically significant rates of secular changes found for 134 stars are distributed nearly symmetrically around zero with a half-width of the distribution equal to about 3.5 times 10^-7 day/year. The remaining rates are confined within the error distribution with dispersion about 2.3 times 10^-7 day/year. The largest rates of period change that have been found are of the order of 5 times 10^-6 day/year.

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