SU UMa型矮新星NY Serpentis中standstill的发现
太阳与恒星天体物理
2019-02-20 v1
摘要
我们发现位于周期间隙中的SU UMa型矮新星NY Ser[轨道周期0.097558(6) d]在2018年两次出现standstill。这是SU UMa型矮新星超爆发之间发生standstill的首次明确证实。standstill期间无超驼峰迹象，且至少有一次超爆发直接由standstill开始。这提供了3:1共振在standstill期间被激发的有力证据。该现象表明吸积盘半径可在standstill期间增大。我们还解释认为，接近潮汐不稳定性极限的条件导致超爆发提前熄灭，致使超爆发后盘中残留大量物质。我们认为盘中接近潮汐不稳定性极限的大量物质导致了standstill（如高吸积率系统NY Ser）或多次再增亮（如低吸积率系统V1006 Cyg）。
引用
@article{arxiv.1901.05100,
title = {Discovery of Standstills in the SU UMa-Type Dwarf Nova NY Serpentis},
author = {Taichi Kato and Elena P. Pavlenko and Nikolaj V. Pit and Kirill A. Antonyuk and Oksana I. Antonyuk and Julia V. Babina and Aleksei V. Baklanov and Aleksei A. Sosnovskij and Sergey P. Belan and Yutaka Maeda and Yuki Sugiura and Sho Sumiya and Hanami Matsumoto and Daiki Ito and Kengo Nikai and Naoto Kojiguchi and Katsura Matsumoto and Pavol A. Dubovsky and Igor Kudzej and Tomas Medulka and Yasuyuki Wakamatsu and Ryuhei Ohnishi and Takaaki Seki and Keisuke Isogai and Andrii O. Simon and Yaroslav O. Romanjuk and Alexsandr R. Baransky and Aleksandr V. Sergeev and Vira G. Godunova and Inna O. Izviekova and Volodymyr A. Kozlov and Aleksandr S. Sklyanov and Roman Ya. Zhuchkov and Alexei G. Gutaev and Vasyl O. Ponomarenko and Volodymyr V. Vasylenko and Ian Miller and Kiyoshi Kasai and Shawn Dvorak and Kenneth Menzies and Enrique de Miguel and Stephen M. Brincat and Roger D. Pickard},
journal= {arXiv preprint arXiv:1901.05100},
year = {2019}
}
备注
6 pages, 2 figures, Supporting information in si.pdf, accepted for publication in PASJ (Letters)