ejaavso38.2.147

Optical Time-Series Photometry of the Peculiar Nova CSS 081007:030559+054715

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Matthew Templeton
AAVSO Headquarters, 49 Bay State Road, Cambridge, MA 02138

Robert Koff
980 Antelope Drive West, Bennett, CO 80102

Patrick Wils
Aarschotsebaan 31, Hever B-3191, Belgium

Arne A. Henden
AAVSO Headquarters, 49 Bay State Road, Cambridge, MA 02138

Received July 31, 2009; revised December 10, 2009; accepted May 10, 2010

Abstract
We present an analysis of optical photometry of the transient optical and X-ray source CSS081007:030559+054715. Unfiltered CCD observations were made between 2008 December 17 and December 30 (JD 2454817.5 to 2454830.5), showing variability at the level of 0.5 magnitude. Time-series analyses of these data confirm the existence of the 1.77-day period detected in X-ray, UV, and optical wavelengths by the Swift satellite. The maxima of the optical and X-ray emission appear to be out of phase.

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