Light curve solutions of the ultrashort-period $Kepler$ binaries

Abstract

We carried out light curve solutions of the ultrashort-period binaries with MS components observed by $Kepler$. All six targets turned out almost in thermal contact with contact or slightly overcontact configurations. Two of them, KID 4921906 and KID 6309193, are not eclipsing but reveal ellipsoidal and spot variability. One of the components of KID 8108785 exhibits inherent, quasi-sinusoidal, small-amplitude variability. KID 12055255 turned out a very rare case of ultrashort-period overcontact binary consisting of two M dwarfs. Our modeling indicated that the variability of KID 9532219 is due to eclipses but not to $\delta$ Sct pulsations as it was previously supposed.

arXiv comment6 pages, 6 figures, 3 tables, accepted for publication in Astron. Nachrichten

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Cited by in corpus (3)

• Contact binaries at the short period cut-off I. statistics and the first photometric investigations of ten totally eclipsing systems
• The Varying Light Curve and Timings of the Ultra-short Period Contact Binary KIC 9532219
• Light curve solutions of the ultrashort-period $Kepler$ binaries