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arXiv · 1505.07709

Results of a campaign to observe outbursts of the dwarf nova CSS 121005:212625+201948

Jeremy Shears·James Boardman·David Boyd·Denis Buczynski·Pavol Dubovsky·Juan-Luis Gonzalez Carballo·Kenneth Menzies·Ian Miller·Roger Pickard·Gary Poyner·Richard Sabo·Richard Sargent
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Abstract

A monitoring programme of CSS 121005:212625+201948 covering nearly two observing seasons has shown that it is a typical SU UMa dwarf nova, but it has one of the shortest supercycles of its class, at 66.9(6) d. The superoutbursts are interspersed with 3 to 7 short duration (~2 days) normal outbursts each of which are separated by a mean interval of 11 days, but can be as short as 2 days. The most intensively studied superoutburst was that of 2014 November, which lasted 14 days and had an outburst amplitude of >4.8 magnitudes, reaching magnitude 15.7 at its brightest. Time resolved photometry revealed superhumps with a peak-to-peak amplitude of 0.2 magnitudes, later declining to 0.1 magnitude. The superhump period was Psh = 0.08838(18) d. Time resolved photometry was conducted during several other superoutbursts, which gave broadly similar results.

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Jeremy Shears, James Boardman, David Boyd, Denis Buczynski, Pavol Dubovsky, Juan-Luis Gonzalez Carballo, Kenneth Menzies, Ian Miller, Roger Pickard, Gary Poyner, Richard Sabo, Richard Sargent. 2015-05-28. Results of a campaign to observe outbursts of the dwarf nova CSS 121005:212625+201948. https://arxiv.org/abs/1505.07709

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