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A 6.3-h superhump in the cataclysmic variable TV Columbae: the longest yet seen

A. Retter·C. Hellier·T. Augusteijn·T. Naylor·T. Bedding·C. Bembrick·J. McCormick·F. Velthuis
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Abstract

We present results from a two week multi-longitude photometric campaign on TV Col held in 2001 January. The data confirm the presence of a permanent positive superhump found in re-examination of extensive archive photometric data of TV Col. The 6.3-h period is 15 per cent longer than the orbital period and obeys the well known relation between superhump period excess and binary period. At 5.5-h, TV Col has an orbital period longer than any known superhumping cataclysmic variable and, therefore, a mass ratio which might be outside the range at which superhumps can occur according to the current theory. We suggest several solutions for this problem.

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A. Retter, C. Hellier, T. Augusteijn, T. Naylor, T. Bedding, C. Bembrick, J. McCormick, F. Velthuis. 2002-12-05. A 6.3-h superhump in the cataclysmic variable TV Columbae: the longest yet seen. https://doi.org/10.1046/j.1365-8711.2003.06331.x

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