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arXiv · 1011.5321

The first confirmed superoutburst of the SU UMa type dwarf nova SDSS J083931.35+282824.0

Jeremy Shears·Enrique de Miguel·George Roberts·Donald F. Collins·Gordon Myers·Tut Campbell
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Abstract

We report unfiltered CCD photometry of the first confirmed superoutburst of the recently discovered dwarf nova, SDSS J083931.35+282824.0 in April 2010. From a quiescence magnitude of ~19.8 it rose to 14.0, an outburst amplitude of at least 5.8 magnitudes. Only the plateau phase of the outburst was observed during which superhumps with peak-to-peak amplitude of up to 0.28 magnitudes were present, confirming this to be an SU UMa type dwarf nova. The mean superhump period was Psh = 0.07836(2) during the first 3 days and this subsequently decreased to 0.07800(3) d. Analysis of the data revealed tentative evidence for an orbital period Porb = 0.07531(25) d. The fractional superhump period excess was epsilon = 0.039(6), which is consistent with other dwarf novae of similar orbital period.

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Jeremy Shears, Enrique de Miguel, George Roberts, Donald F. Collins, Gordon Myers, Tut Campbell. 2010-11-24. The first confirmed superoutburst of the SU UMa type dwarf nova SDSS J083931.35+282824.0. https://arxiv.org/abs/1011.5321

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