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Physical Sciences and Mathematics Commons

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Astrophysics and Astronomy

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Aerospace, Physics, and Space Science Faculty Publications

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2011

Cataclysmic Variables

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Full-Text Articles in Physical Sciences and Mathematics

V344 Lyrae: A Touchstone Su Uma Cataclysmic Variable In The Kepler Field, Matt A. Wood, Martin D. Still, Steve B. Howell, John K. Cannizzo, Alan P. Smale Nov 2011

V344 Lyrae: A Touchstone Su Uma Cataclysmic Variable In The Kepler Field, Matt A. Wood, Martin D. Still, Steve B. Howell, John K. Cannizzo, Alan P. Smale

Aerospace, Physics, and Space Science Faculty Publications

We report on the analysis of the Kepler short-cadence (SC) light curve of V344 Lyr obtained during 2009 June 20 through 2010 March 19 (Q2-Q4). The system is an SU UMa star showing dwarf nova (DN) outbursts and superoutbursts, and promises to be a touchstone for CV studies for the foreseeable future. The system displays both positive and negative superhumps with periods of 2.20 and 2.06 hr, respectively, and we identify an orbital period of 2.11 hr. The positive superhumps have a maximum amplitude of ~0.25 mag, the negative superhumps have a maximum amplitude of ~0.8 mag, and the orbital …