VSX J074727.6+065050: a new WZ Sagittae star in Canis minor

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dc.creatorShears, Jeremy
dc.creatorBrady, Steve
dc.creatorBolt, Greg
dc.creatorCampbell, Tut
dc.creatorCollins, Donald F.
dc.creatorCook, Lewis M.
dc.creatorCrawford, Timothy R.
dc.creatorKoff, Robert
dc.creatorKrajci, Tom
dc.creatorMcCormick, Jennie
dc.creatorNelson, Peter
dc.creatorPatterson, Joseph
dc.creatorde Ponthiere, Pierre
dc.creatorPotter, Mike
dc.creatorRea, Robert
dc.creatorRoberts, George
dc.creatorSabo, Richard
dc.creatorStaels, Bart
dc.creatorVanmunster, Tonny
dc.date2009-05-01
dc.date.accessioned2026-07-07T13:10:59Z
dc.date.available2026-07-07T13:10:59Z
dc.descriptionWe present photometry of the first reported superoutburst of the dwarf nova VSX J074727.6+065050 during 2008 January and February. At its brightest the star reached magnitude 11.4 and this was followed by a slow decline at 0.09 mag/d for 19 days, corresponding to the plateau phase. There was then a rapid decline at 1.66 mag/d to a temporary minimum at magnitude 16.6 where it stayed for 2 to 3 days after which there were six remarkable echo outbursts before the star gradually faded back towards quiescence at ~magnitude 19.5. The overall outburst amplitude was at least 8 magnitudes and it lasted more than 80 days. During the plateau phase we observed common superhumps with Psh = 0.06070(6) d, but the period increased to Psh = 0.06151(5) d coinciding with the end of the plateau phase and the onset of the rapid decline. This corresponds to a continuous period change with P^dot = +4.4(9) x 10-5. During the echo outbursts there was a superhump regime with Psh = 0.06088(49) d. Evidence is presented which is consistent with the star being a member of the WZ Sge family of dwarf novae.
dc.description20 pages, 11 figures. Accepted for publication in the Journal of the British Astronomical Association
dc.identifierhttps://arxiv.org/abs/0905.0061
dc.identifierhttp://arxiv.org/abs/0905.0061
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229154
dc.subjectSolar and Stellar Astrophysics
dc.titleVSX J074727.6+065050: a new WZ Sagittae star in Canis minor
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