RR Lyrae stars in the GCVS observed by the Qatar Exoplanet Survey
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We used the light curve archive of the Qatar Exoplanet Survey to investigate the RR Lyrae variable stars listed in the GCVS. Of 588variables studied, we reclassified 14 as eclipsing binaries, one as an RS CVn type variable, one as an irregular variable, four as classical Cepheids, and one as a type II Cepheid, while also improving their periods. We also report new RR Lyrae sub-type classifications for 65variables and improve on the GCVS period estimates for 135 RR Lyrae variables. There are seven double-mode RR Lyrae stars in the sample for which we measured their fundamental and first overtone periods. Finally,we detected the Blazhko effect in 38 of the RR Lyrae stars for the first time and we successfully measured the Blazhko period for 26 of them.
Bramich , D M , Alsubai , K A T , Arellano Ferro , A , Parley , N , Cameron , A C , Horne , K D , Pollacco , D & West , R G 2014 , ' RR Lyrae stars in the GCVS observed by the Qatar Exoplanet Survey ' Information Bulletin on Variable Stars , vol 6106 , 6106 .
Information Bulletin on Variable Stars
Copyright 2014 the Authors. This is an open access article licensed under a CC BY-NC-ND Creative Commons licence. This is the final published version of the work, which was originally published at http://ibvs.konkoly.hu/pub/ibvs/6101/6106.pdf
This publication was made possible by NPRP grant # X-019-1-006 from the Qatar National Research Fund (a member of Qatar Foundation). AAF is grateful to DGAPA-UNAM for grant number IN104612.