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18 April 2024

» arxiv » 1104.0104

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The orbital period of the eclipsing dwarf nova SDSS J081610.84+453010.2
Jeremy Shears ; Steve Brady ; Tut Campbell ; Arne Henden ; Enrique de Miguel ; Etienne Morelle ; George Roberts ; Richard Sabo ; Ian Miller ;
Date:	1 Apr 2011
Abstract:	We present time resolved photometry of the cataclysmic variable SDSS J081610.84+453010.2 and have established for the first time that it is an eclipsing dwarf nova. We observed an outburst of the system which lasted about 11 days and had an amplitude of 3.4 magnitudes above mean quiescence. From an analysis of the eclipse times of minimum during the outburst, we determined the orbital period as Porb = 0.2096(4) d or 5.030(10) h. The orbital period places it above the period gap in the distribution of orbital periods of dwarf novae. The eclipses are of short duration (average FWHM = 10.7 min or 0.036 of the orbital period) and shallow (average 0.4 mag during outburst and 0.6 magnitude in quiescence), suggesting a grazing eclipse.
Source:	arXiv, 1104.0104
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