论文标题
通过过境观测来研究QATAR-1超极性行星系统
Investigating Extra-solar Planetary System Qatar-1 through Transit Observations
论文作者
论文摘要
我们使用三十八个光曲线报告了Qatar-1b超极行星的传输时序变化（TTV）分析的结果。我们的分析结合了35个以前可用的过境光曲线以及2016年6月至2016年9月在印度天文天文台（Hanle，India）的2-M喜马拉雅Chandra望远镜（HCT）之间观察到的三个新的过境。从这些传输数据中，确定了卡塔尔-1系统的物理和轨道参数。除此之外，轨道时期和中途时间中的胚胎被完善了以研究可能的TTV。我们发现NULL-TTV模型为（O-C）数据提供了更好的拟合度。这表明没有证据表明TTV可以确认卡塔尔-1系统中其他行星的存在。 Aryabhatta研究所（Aryabhatta Research Institute of观测科学研究所（Aries，India，India）运行的3.6-M Devasthal光学望远镜（DOT）可以提高光度准确性，以检查该系统中TTVS在该系统中的特征，其准确性比目前的工作更高。
We report the results of the transit timing variation (TTV) analysis of the extra-solar planet Qatar-1b using thirty eight light curves. Our analysis combines thirty five previously available transit light curves with three new transits observed by us between June 2016 and September 2016 using the 2-m Himalayan Chandra Telescope (HCT) at the Indian Astronomical Observatory (Hanle, India). From these transit data, the physical and orbital parameters of the Qatar-1 system are determined. In addition to this, the ephemeris for the orbital period and mid-transit time are refined to investigate the possible TTV. We find that the null-TTV model provides the better fit to the (O-C) data. This indicates that there is no evidence for TTVs to confirm the presence of additional planets in the Qatar-1 system. The use of the 3.6-m Devasthal Optical Telescope (DOT) operated by the Aryabhatta Research Institute of Observational Sciences (ARIES, Nainital, India) could improve the photometric precision to examine the signature of TTVs in this system with a greater accuracy than in the present work.
