Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8141346 | New Astronomy | 2018 | 9 Pages |
Abstract
Photometric observations in Sloan gâ² and iâ² bands of the W UMa binaries V0951 Per, CSS J062803.2+571604, CSS J222157.2+275308, CSS J075135.6+382028, V0338 Dra, NSVS 2256852, NSVS 4666412, V1355 Tau, NSVS 4808227, NSVS 4726498, CSS J075350.1+264830 and HL Lyn are presented. The light curve solutions revealed that these binaries have overcontact configurations with small fillout factors (within 0.1-0.2). Seven of them undergo total eclipses and their photometric mass ratios should be accepted with confidence. The temperature differences of the components of CSS J062803.2+571604 and NSVS 2256852 exceed 1100Â K which is unusual for overcontact binaries. We suspect that NSVS 2256852 is a probable candidate for merger due to its small mass ratio of q = 0.16 and to the registered decreasing of the orbital period.
Related Topics
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Authors
Diana P. Kjurkchieva, Velimir A. Popov, Doroteya L. Vasileva, Nikola I. Petrov,