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arXiv 1408.4285astro-ph.SR
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NY蛇形星系:周期间隙中的SU UMa型新星与正常爆发的多样性

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, Franz-Josef Hambsch, Kirill A. Antonyuk, Aleksei A. Sosnovskij, Alex V. Baklanov, Sergey Y… 展开作者

Elena P. Pavlenko, Taichi Kato, Oksana I. Antonyuk, Tomohito Ohshima, Franz-Josef Hambsch, Kirill A. Antonyuk, Aleksei A. Sosnovskij, Alex V. Baklanov, Sergey Yu. Shugarov, Nikolaj V. Pit, Chikako Nakata, Gianluca Masi, Kazuhiro Nakajima, Hiroyuki Maehara, Pavol A. Dubovsky, Igor Kudzej, Maksim V. Andreev, Yuliana G. Kuznyetsova, Kirill A. Vasiliskov

摘要:

我们目前的光度研究NY Ser,在间隙SU UMa型新星,在2002年和2013年。超爆发持续时间为18 d,平均超峰周期为0.10458 d。我们在2013年检测到,纽约Ser显示出两种被超级爆发分开的不同状态。一个状态,而不频繁的正常爆发持续至少44天前的超级爆发和频繁爆发的状态开始后立即超级爆发,并持续至少34天。与典型的爆发持续时间呈双峰分布的SU UMa星不同,NY Ser显示出正常爆发的多样性。在不频繁爆发的状态下,我们发现了一个宽~12 d的爆发,伴随着0.098 d的轨道调制,但没有建立在NY系列的超级驼峰,我们将其归类为“宽正常爆发”。轨道周期占主导地位,在平静和正常爆发期间,在这种状态。在最频繁的正常爆发状态下,0.10465 d的正超峰占主导地位,并与轨道调制共存。在2002年,我们发现了正常的爆发“中间”5-6天的持续时间,也伴随着轨道调制。

英文摘要:

We present photometric study of NY Ser, an in-the-gap SU UMa-type nova, in 2002 and 2013. We determined the duration of the superoutburst and the mean superhump period to be 18 d and 0.10458 d, respectively. We detected in 2013 that NY Ser showed two distinct states separated by the superoutburst. A state of rather infrequent normal outbursts lasted at least 44 d before the superoutburst and a state of frequent outbursts started immediately after the superoutburst and lasted at least for 34 d. Unlike a typical SU UMa star with bimodal distribution of the outbursts duration, NY Ser displayed a diversity of normal outbursts. In the state of infrequent outbursts, we detected a wide ~12 d outburst accompanied by 0.098 d orbital modulation but without superhumps ever established in NY Ser. We classified this as the "wide normal outburst". The orbital period dominated both in quiescence and during normal outbursts in this state. In the state of the most frequent normal outbursts, the 0.10465 d positive superhumps dominated and co-existed with the orbital modulation. In 2002 we detected the normal outburst of "intermediate" 5-6 d duration that was also accompanied by orbital modulations.

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