论文标题
使用地面和苔丝观测的四个热木星的精制晶体器
Refined Ephemeris for Four Hot Jupiters using Ground-Based and TESS Observations
论文作者
论文摘要
WASP-12 B，WASP-33 B，WASP-36 B和WASP-46 B是我们研究过的四个过渡行星系统。这些系统的光曲线源自通过传输光外行测量卫星（TESS）和一些地面望远镜进行的观察结果。我们使用exofast-v1对这些光曲线进行建模并计算中间频率时间。此外，我们使用派生的中期时间和文献中可用的时间为它们绘制了TTV图。 O-C分析这些时序使我们能够完善四个系统的线性胚片。我们基于将苔丝数据添加为q*'=（2.13+-0.29）*10^5，测量了WASP-12的潮汐质量因子。根据分析，WASP-46 B系统的轨道周期正在增加。 WASP-36 B和WASP-33 B系统在其TTV图中尚未显示出明显的二次趋势。他们的时期的增加很可能是由于不准确的衬里阵地，随着时间的流逝而增加。因此，需要更多的观察结果来评估WASP-36 B和WASP-33 B系统中是否存在轨道衰减。
WASP-12 b, WASP-33 b, WASP-36 b, and WASP-46 b are four transiting planetary systems which we have studied. These systems' light curves were derived from observations made by the Transiting Light Exoplanet Survey Satellite (TESS) and some ground-based telescopes. We used Exofast-v1 to model these light curves and calculate mid-transit times. Also, we plotted TTV diagrams for them using derived mid-transit times and those available within the literature. O-C analysis of these timings enables us to refine the linear ephemeris of four systems. We measured WASP-12's tidal quality factor based on adding TESS data as Q*'=(2.13+-0.29)*10^5. According to the analysis, the orbital period of the WASP-46 b system is increasing. The WASP-36 b and WASP-33 b systems have not shown any obvious quadratic trend in their TTV diagrams. The increase in their period is most likely due to inaccurate liner ephemeris that has increased over time. So, more observations are needed to evaluate whether or not there is an orbital decay in the WASP-36 b and WASP-33 b systems.
