论文标题
WASP-166B的同时苔丝和NGTS的传输观测值
Simultaneous TESS and NGTS Transit Observations of WASP-166b
论文作者
论文摘要
我们使用九个NGTS望远镜同时观察到WASP-166 B的转运，并观察到同一转运。我们使用9个NGTS望远镜的组合达到了每30分钟152 ppm的光度精度，与TESS在此明亮（T = 8.87）恒星围绕过境事件中达到的精度匹配。发现单个NGTS光曲线噪声以闪烁噪声为主，并且似乎没有任何时间相关的噪声或望远镜系统之间的任何相关性。我们为$ t_c $和$ r_p/r _*$适合NGTS数据。我们发现$ t_c $与Tess数据结果的0.25 $σ$保持一致，而测得的TESS和NGTS之间的差异为$ R_P/R _*$值为0.9 $σ$。该实验表明，多型TeleScope NGTS光度法可以与明亮的恒星的苔丝精确度相匹配，并且将成为精炼Radii和Ephemerides的有价值的工具，用于明亮的苔丝候选者和行星。实现的运输时机还将使NGT能够测量多行星系统中的显着运输时机变化。
We observed a transit of WASP-166 b using nine NGTS telescopes simultaneously with TESS observations of the same transit. We achieved a photometric precision of 152 ppm per 30 minutes with the nine NGTS telescopes combined, matching the precision reached by TESS for the transit event around this bright (T=8.87) star. The individual NGTS light curve noise is found to be dominated by scintillation noise and appears free from any time-correlated noise or any correlation between telescope systems. We fit the NGTS data for $T_C$ and $R_p/R_*$. We find $T_C$ to be consistent to within 0.25$σ$ of the result from the TESS data, and the difference between the TESS and NGTS measured $R_p/R_*$ values is 0.9$σ$. This experiment shows that multi-telescope NGTS photometry can match the precision of TESS for bright stars, and will be a valuable tool in refining the radii and ephemerides for bright TESS candidates and planets. The transit timing achieved will also enable NGTS to measure significant transit timing variations in multi-planet systems.
