Optical Time-Series Photometry of the Peculiar Nova CSS081007:030559+054715

摘要

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.