Superhumps in Cataclysmic Binaries. XVII. AM Canum Venaticorum
Publications of the Astronomical Society of the Pacific1999Vol. 111(764), pp. 1281–1291
Citations Over TimeTop 10% of 1999 papers
David R. Skillman, J. Patterson, Jonathan Kemp, David A. Harvey, Robert Fried, A. Retter, Y. Lipkin, Tonny Vanmunster
Abstract
We report new photometry of the cataclysmic variable AM Canum Venaticorum, comprising 670 hr over 227 nights during 1992–1999. The data demonstrate conclusively that (1) the fundamental period is 1051.2 s, with a well‐defined waveform which has not changed during the four decades of study; (2) this period wanders erratically by ∼0.2 s on a timescale of 3–6 months; and (3) the light curve contains a rich spectrum of periodic signals, at least 20 of them. We also report a secure detection of a photometric signal at 1028.7322 ± 0.0003 s, consistent with the orbital period previously hypothesized to explain the spectroscopic variations.
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