论文标题
Zwicky瞬态设施的两个候选KH 15D式系统
Two Candidate KH 15D-like Systems from the Zwicky Transient Facility
论文作者
论文摘要
KH 15D包含一个相对于中央二元的轨道平面而倾斜的环盘。磁盘的进积和二元的轨道运动在一起在光度光曲线中产生丰富的现象。在这项工作中，我们介绍了两个对象的发现和初步分析，这些对象类似于Zwicky瞬态设施的KH 15D的关键特征。这些新对象，即Bernhard-1和Bernhard-2，显示出大振幅（$> 1.5 \，$ mag），长期（超过数十天）以及定期调度事件。开发了一个单方面的屏幕模型来对这些对象的光度法进行建模，其物理解释是倾斜的，扭曲的圆盘，将内部二进制固定。物体光曲线的变化表明超过10年的时间尺度的潜在进动期。鼓励其他光度和光谱观测更好地理解这些有趣的系统的性质。
KH 15D contains a circumbinary disk that is tilted relative to the orbital plane of the central binary. The precession of the disk and the orbital motion of the binary together produce rich phenomena in the photometric light curve. In this work, we present the discovery and preliminary analysis of two objects that resemble the key features of KH 15D from the Zwicky Transient Facility. These new objects, Bernhard-1 and Bernhard-2, show large-amplitude ($>1.5\,$mag), long-duration (more than tens of days), and periodic dimming events. A one-sided screen model is developed to model the photometric behaviour of these objects, the physical interpretation of which is a tilted, warped circumbinary disk occulting the inner binary. Changes in the object light curves suggest potential precession periods over timescales longer than 10 years. Additional photometric and spectroscopic observations are encouraged to better understand the nature of these interesting systems.
