论文标题
z cam star py per per su uma state？
Z Cam star PY Per in SU UMa state?
论文作者
论文摘要
Py Per被称为Z Cam Star。使用VSOLJ，VSNET，AAVSO，ASAS-SN和ZTF观测值，我发现该对象经历了微弱状态，并将其分类为Z Cam + Vy SCL星。此外，该物体改变了自2020年以来的爆发行为，并且一直表现出定期反复出现的长长，明亮的爆发，其周期为110-160 d，它们之间的短暂而微弱的爆发。 2021年12月至2022年1月的爆发特别类似于超级爆炸，逐渐衰落的高原阶段的持续时间超过25 d，而在褪色的部分中有两个重新饰演。该对象的长轨道周期为0.15468（5）d，基于苔丝数据和先前的径向速度研究。在具有较长轨道时期的系统中存在超出爆炸的存在是不寻常的，但不是前所未有的。由于现象可能仍在进行中，因此当太阳能结合后的早晨天空中出现时，我会引起人们的注意。
PY Per has been known as a Z Cam star. Using VSOLJ, VSNET, AAVSO, ASAS-SN and ZTF observations, I found that this object experienced faint states and classified it to be a Z Cam + VY Scl star. Furthermore, the object changed the outburst behavior since 2020 and it has been showing regularly recurring long, bright outbursts with cycles of 110-160 d and short, faint outbursts between them. The 2021 December--2022 January outburst particularly resembled a superoutburst with a gradually fading plateau phase having a duration more than 25 d and two rebrightenings in the fading part. This object has a long orbital period of 0.15468(5) d based on the TESS data and the previous radial-velocity study. The existence of a superoutburst in a system with a long orbital period would be unusual, but not unprecedented. Since the phenomenon may still be ongoing, I draw attention to this object when it emerges from in the morning sky after the solar conjunction.
