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Deciphering Multiple Observations of V480 Lyrae

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Jerry Horne

3055 Lynview Drive, San Jose, CA 95148

Based on a paper presented at the joint meeting of the Society for Astronomical Sciences and the American Association of Variable Star Observers, held in Big Bear Lake, CA, May 19–21, 2009

Received June 3, 2009; revised August 18, 2009; accepted September 1, 2009

Abstract
Existing and new observations of the variable V480 Lyr are examined and analyzed. This study utilized a 25-cm Schmidt-Cassegrain Telescope (SCT) to observe multiple cycles of the star and obtain new BVRI-band photometry. These new observations, when combined with other published observational data, allowed the determination of multiple period values for the variable. From this multi-period behavior, and from an examination of other intrinsic parameters, there is evidence that V480 Lyr could be classified as an RV Tauri type star, which differs from earlier classifications.