The first confirmed superoutburst of the SU UMa-type dwarf nova SDSS J083931.35+282824.0
Abstract
We report unfiltered CCD photometry of the first confirmed superoutburst in 2010 April of the recently discovered dwarf nova SDSS J083931.35+282824.0. 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 e= 0.039(6), which is consistent with other dwarf novae of similar orbital period.
- Publication:
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Journal of the British Astronomical Association
- Pub Date:
- December 2011
- DOI:
- 10.48550/arXiv.1011.5321
- arXiv:
- arXiv:1011.5321
- Bibcode:
- 2011JBAA..121..363S
- Keywords:
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- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 12 pages, 3 figures. Accepted for publication in the Journal of the British Astronomical Association