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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Discovery of standstills in the SU UMa-type dwarf nova NY?Serpentis
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Discovery of standstills in the SU UMa-type dwarf nova NY?Serpentis

机译：在SU UMa型矮新星NY？Serpentis中发现停滞状态

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We found that the SU UMa-type dwarf nova NY Ser in the period gap [orbital period 0.097558(6)?d] showed standstills twice in 2018. This is the first clear demonstration of a standstill occurring between superoutbursts of an SU?UMa-type dwarf nova. There was no sign of superhumps during the standstill, and at least one superoutburst directly started from the standstill. This provides strong evidence that the 3:1 resonance was excited during standstills. This phenomenon indicates that the disk radius can grow during standstills. We also deduce that the condition close to the limit of the tidal instability caused early quenching of superoutbursts, which resulted in a substantial amount of matter left in the disk after the superoutburst. We think that substantial matter in the disk in a condition close to the limit of the tidal instability is responsible for standstills (as in the high-mass-transfer system NY?Ser) or multiple rebrightenings (as in the low-mass-transfer system V1006?Cyg).
机译：我们发现，SU UMa型矮新星NY Ser在周期间隙[轨道周期0.097558（6）？d]中在2018年出现两次停顿。这是SU？UMa-超爆发之间发生停顿的第一个清晰例证。输入矮新星。停顿期间没有超级驼峰的迹象，并且至少有一个超级爆发直接从停顿开始。这提供了有力的证据，表明在静止状态下会激发3：1共振。此现象表明磁盘半径在停顿期间会增大。我们还推断出，接近潮汐不稳定性极限的条件会导致超爆发的早期淬灭，从而导致超爆发后磁盘中留有大量物质。我们认为，在接近潮汐不稳定性极限的条件下，盘中的大量物质是造成停顿（如在高质量传输系统中的NY？Ser）或多次增亮（如在低质量传输系统中）的原因V1006？Cyg）。

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