NY Serpentis : SU UMa-type nova in the period gap with diversity of normal outbursts

Elena P Pavlenko,Taichi Kato,Oksana I Antonyuk,Tomohito Ohshima,Franzjosef Hambsch,Kirill Antonyuk,Aleksei A Sosnovskij,Alexander Baklanov,S Y Shugarov,Nikolaj V Pit,Chikako Nakata,Gianluca Masi,Kazuhiro Nakajima,Hiroyuki Maehara,Pavol A Dubovsky,Igor Kudzej,M Andreev,Yuliana G Kuznyetsova,Kirill A Vasiliskov

Publications of the Astronomical Society of Japan（2014）

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摘要

We present a photometric study of NY Ser, an in-the-gap SU UMa-type nova, in 2002 and 2013. We determined the duration of its superoutburst and the mean period of its superhump are 18 d and 0.10458 d, respectively. We detected in 2013 that NY Ser showed two distinct states separated by a superoutburst. A state of rather infrequent normal outbursts lasted at least 44 d before the superoutburst, and...

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关键词

accretion, accretion disks,novae, cataclysmic variables,stars: dwarf novae,stars: individual (NY Serpentis),stars: individual (V1006 Cygni)

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