Study of a Variable Star Discovered with the 0.5-M F/1 Baker-nunn Patrol Camera of the RAO

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At the Rothney Astrophysical Observatory (RAO) of the University of Calgary, the Baker-Nunn Patrol Camera (BNPC) has discovered dozens of variable stars. Follow-up observations on RAOVS001-000107, a close binary system, were carried out using the 0.4-m telescope at the RAO. Whereas the BNPC is limited to a single passband ( RJ) the 0.4-m telescope provides observations in UBVRI passbands, fills in gaps in the BNPC light curve, and provides higher-resolution images. The measured light curve will be analyzed with a version of the Wilson-Devinney program (WD2006) developed by J. Kallrath and EM to attempt to determine as many of this stellar systems' fundamental properties. RAOVS001-000107 was discovered by MW, who developed the pipeline process to carry out image processing, identify variables, and produce preliminary light curves. The field of the camera is 19 square degrees.The BNPC was developed under a provincial research infrastructure improvement grant from the Alberta Science Research Authority to EM and A. Hildebrand, with major contributions from several partners and other agencies. The FLI CCD has been available by special arrangement with Peter Brown, UWO. This work has been funded in part with Canadian NSERC grants to EM and a federal SCPP grant, for which TL is appreciative.

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