论文标题
检测与苔丝黄蜂100B的相曲线和掩星
Detection of the phase curve and occultation of WASP-100b with TESS
论文作者
论文摘要
我们使用苔丝光度法报告了热jupiter WASP-100B的完整轨道相曲线和掩星的检测。通过使用非参数谐波Notch滤波器（Phasma）和半扇区长多项式抑制低频恒星和仪器模式，可以隔离相曲线。这产生了（73 +/- 9）ppm振幅的相位曲线信号，而不是deltabic = 25，而不是零模型，表明观察到的效果非常有力。我们使用五个临时局部工具（包括高斯过程和余弦过滤）的套件恢复了掩盖事件。这使我们能够推断出（100 +/- 14）ppm的螺型深度，并从方法之间的差异中添加+/- 16 ppm的系统误差。我们将一个模型回归，包括大气反射，发射，椭圆形变化和多普勒横梁，以相结合的相曲线和掩盖数据。 This allows us to infer that WASP-100b has a geometric albedo of A_g = 0.16 (+0.04, -0.03) in the TESS bandpass, with a maximum dayside brightness temperature of (2710 +/- 100) K and a warm nightside temperature of (2380 [+170, -200]) K. Additionally, we find evidence that WASP-100b has a high thermal redistribution efficiency, manifesting as a大量的向东热点抵消了（71 [+2，-4]）度。这些结果列出了到目前为止苔丝观察到的相曲线之间的热相移的首次测量，并挑战了超热木星大气中热传输的预测效率。
We report the detection of the full orbital phase curve and occultation of the hot-Jupiter WASP-100b using TESS photometry. The phase curve is isolated by suppressing low frequency stellar and instrumental modes using both a non-parametric harmonic notch filter (phasma) and semi-sector long polynomials. This yields a phase curve signal of (73 +/- 9) ppm amplitude, preferred over a null-model by deltaBIC = 25, indicating very strong evidence for an observed effect. We recover the occultation event with a suite of five temporally localized tools, including Gaussian processes and cosine filtering. This allows us to infer an occultation depth of (100 +/- 14) ppm, with an additional +/- 16 ppm systematic error from the differences between methods. We regress a model including atmospheric reflection, emission, ellipsoidal variations and Doppler beaming to the combined phase curve and occultation data. This allows us to infer that WASP-100b has a geometric albedo of A_g = 0.16 (+0.04, -0.03) in the TESS bandpass, with a maximum dayside brightness temperature of (2710 +/- 100) K and a warm nightside temperature of (2380 [+170, -200]) K. Additionally, we find evidence that WASP-100b has a high thermal redistribution efficiency, manifesting as a substantial eastward hotspot offset of (71 [+2, -4]) degrees. These results present the first measurement of a thermal phase shift among the phase curves observed by TESS so far, and challenge the predicted efficiency of heat transport in the atmospheres of ultra-hot Jupiters.
