论文标题
使用苔丝观测来重新访问Kelt-1b的次要日食
Revisiting the secondary eclipses of KELT-1b using TESS observations
论文作者
论文摘要
我们使用来自Transiting Exoplanet Survey卫星（TESS）的数据，介绍了Transiting Planet Kelt-1b％（$ R_P \ Simeq 1.15 R_J，M_P \ Simeq 27.23 M_J $）的表征。在周期中的％$ 2 $，$ 17 $。我们的光曲线模型包括初级过境和次要日食。在这里，我们使用高斯过程（GPS）对系统噪声进行建模，并使用Markov Chain Monte Carlo（MCMC）方法将其拟合到数据。苔丝光曲线的建模返回行星与星形半径比率，$ p = $ $ 0.07652 _ { - 0.00028}^{+0.00029} $，相对较大的次要蚀深度为$ 388 _ { - 13}}^{+12} $ ppm。使用MCMC方法更新KELT-1B的Transit Ephemeris。最后，我们通过寻找KELT-1B的过境时序变化（TTV）来补充我们的工作。我们在运输时间数据中没有发现与恒定周期模型的显着变化。
We present the characterization of the transiting planet KELT-1b % ($R_p \simeq 1.15 R_J, M_p \simeq 27.23 M_J $) using data from the Transiting Exoplanet Survey Satellite (TESS). % during cycle $2$ and sector $17$. Our light curve model includes primary transit and secondary eclipse. Here, we model the systematic noise using Gaussian processes (GPs) and fit it to the data using the Markov Chain Monte Carlo (MCMC) method. Modelling of the TESS light curve returns a planet-to-star radius ratio, $p =$ $0.07652_{-0.00028}^{+0.00029}$ and a relatively large secondary eclipse depth of $388_{-13}^{+12}$ ppm. The transit ephemeris of KELT-1b is updated using the MCMC method. Finally, we complement our work by searching for transit timing variations (TTVs) for KELT-1b. We do not find significant variations from the constant-period models in our transit time data.
