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arXiv · 1005.3219

The orbital and superhump periods of the deeply eclipsing dwarf nova SDSS J150240.98+333423.9

Jeremy Shears·Tut Campbell·Jerry Foote·Russ Garrett·Tim Hager·William Mack Julian·Jonathan Kemp·Gianluca Masi·Ian Miller·Joseph Patterson·Michael Richmond·Frederick Ringwald·George Roberts·Javier Ruiz·Richard Sabo·William Stein
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Abstract

During July 2009 we observed the first confirmed superoutburst of the eclipsing dwarf nova SDSS J150240.98+333423.9 using CCD photometry. The outburst amplitude was at least 3.9 magnitudes and it lasted at least 16 days. Superhumps having up to 0.35 peak-to-peak amplitude were present during the outburst, thereby establishing it to be a member of the SU UMa family. The mean superhump period during the first 4 days of the outburst was Psh = 0.06028(19) d, although it increased during the outburst with dPsh/dt = + 2.8(1.0) x 10-4. The orbital period was measured as Porb = 0.05890946(5) d from times of eclipses measured during outburst and quiescence. Based on the mean superhump period, the superhump period excess was 0.023(3). The FWHM eclipse duration declined from a maximum of 10.5 min at the peak of the outburst to 3.5 min later in the outburst. The eclipse depth increased from ~0.9 mag to 2.1 mag over the same period. Eclipses in quiescence were 2.7 min in duration and 2.8 mag deep.

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Jeremy Shears, Tut Campbell, Jerry Foote, Russ Garrett, Tim Hager, William Mack Julian, Jonathan Kemp, Gianluca Masi, Ian Miller, Joseph Patterson, Michael Richmond, Frederick Ringwald, George Roberts, Javier Ruiz, Richard Sabo, William Stein. 2010-05-18. The orbital and superhump periods of the deeply eclipsing dwarf nova SDSS J150240.98+333423.9. https://arxiv.org/abs/1005.3219

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