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An Unusual Low State of the Polar AR UMa

Published online by Cambridge University Press:  23 April 2012

Diana P. Kjurkchieva  and
Dragomir V. Marchev
Diana P. Kjurkchieva
Affiliation:
Dept. of Astronomy, Shumen University, 9700 Shumen, Bulgaria email: d.kyurkchieva@shu-bg.net; d.marchev@shu-bg.net
Dragomir V. Marchev
Affiliation:
Dept. of Astronomy, Shumen University, 9700 Shumen, Bulgaria email: d.kyurkchieva@shu-bg.net; d.marchev@shu-bg.net
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Abstract

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Our photometric CCD observations of the short-period cataclysmic star AR UMa in 2008 during its low state revealed light variability with a bigger period (by around 10%) and considerably smaller amplitudes than the previous ones. The light curve had a single-wave shape, opposite to the previously observed low states which revealed doubled-humped shape.

Keywords

stars: close binariescataclysmic variablesindividual AR UMa
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S282: From Interacting Binaries to Exoplanets: Essential Modeling Tools , July 2011 , pp. 498 - 500
Copyright
Copyright © International Astronomical Union 2012

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