Publications (6)
The Discovery of a Persistent Quasi-Periodic Oscillation in the Intermediate Polar TX Col
N. Mhlahlo, D. A. H. Buckley, V. S. Dhillon +8
We report on the detection of an ~5900 s quasi-periodic variation in the extensive photometry of TX Col spanning 12 years. We discuss five different models to explain this period.…
The photometric period in ES Ceti
C. M. Copperwheat, T. R. Marsh, V. S. Dhillon +8
We present ULTRACAM photometry of ES Cet, an ultracompact binary with a 620s orbital period. The mass transfer in systems such as this one is thought to be driven by gravitational…
The 2001 Superoutburst of WZ Sagittae
J. Patterson, G. Masi, M. Richmond +25
We report the results of a worldwide campaign to observe WZ Sagittae during its 2001 superoutburst. After a 23-year slumber at V=15.5, the star rose within 2 days to a peak brightn…
Superhumps in Cataclysmic Binaries. XXIV. Twenty More Dwarf Novae
J. Patterson, J. Thorstensen, J. Kemp +23
We report precise measures of the orbital and superhump period in twenty more dwarf novae. For ten stars, we report new and confirmed spectroscopic periods - signifying the orbital…
Resynchronization of the Asynchronous Polar CD Ind
G. Myers, J. Patterson, E. de Miguel +6
CD Ind is one of only four confirmed asynchronous polars (APs). APs are strongly magnetic cataclysmic variables of the AM Herculis subclass with the characteristic that their white…
Confirmation of 1RXS J165443.5-191620 as an intermediate polar and its orbital and spin periods
S. Scaringi, S. Connolly, J. Patterson +12
Aims: We investigate the physical nature of the X-ray emitting source 1RXS J165443.5-191620 through optical photometry and time-resolved spectroscopy. Methods: Optical photometry i…