用KELT进行Praesepe场中的变星和凌日测光
A Photometric Survey for Variables and Transits in the Field of Praesepe with KELT
摘要：
KELT（Kilodegree Extremely Little Telescope）项目是一个小口径、广角的太阳型恒星行星凌日搜索项目。在本文中，我们提出的委托活动的结果与KELT望远镜观测疏散星团Praesepe的34个夜晚在2005年初。获得了69，337颗恒星的光变曲线，其中我们确定了58个长周期变星和152个周期变星。其中16颗以前被称为变星，产生了194颗新发现的变星，我们提供了它们的性质和光变曲线。我们还搜索了类似行星的凌日，找到了四个凌日候选者。后续观测表明，其中两个候选者是天体物理学的假阳性，还有两个候选者是潜在的行星凌日。
英文摘要：
The Kilodegree Extremely Little Telescope (KELT) project is a small aperture, wide-angle search for planetary transits of solar-type stars. In this paper, we present the results of a commissioning campaign with the KELT telescope to observe the open cluster Praesepe for 34 nights in early 2005. Lightcurves were obtained for 69,337 stars, out of which we identify 58 long period variables and 152 periodic variables. Sixteen of these are previously known as variable, yielding 194 newly discovered variable stars for which we provide properties and lightcurves. We also searched for planetary-like transits, finding four transit candidates. Follow-up observations indicate that two of the candidates are astrophysical false positives, with two candidates remaining as potential planetary transits.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
