论文标题
WASP-117 B：一种偏心的热折 - 作为未来的复杂化学实验室
WASP-117 b: an eccentric hot-Saturn as a future complex chemistry laboratory
论文作者
论文摘要
我们介绍了跨越田野摄像头3（WFC3）在哈勃太空望远镜上观察到的过渡土星质量黄蜂117B的光谱分析。我们使用开源软件Iraclis从原始传输数据中减少并拟合提取的频谱，然后使用公开可用的分析Suite Suite Suite taurex 3.0进行全贝叶斯检索。我们与完全不透明的云一起检测水蒸气，检索终端温度为833K。为了量化该检测的统计学意义，我们采用了大气可检测性指数（ADI），得出2.30的值，该值为2.30，可为扁平线模型提供正面但不强的证据。由于黄蜂117b的偏心轨道，由于温度变化，化学和混合时间尺度在整个轨道上都振荡，尽管尽管它靠近其进入Apastron，但随着行星的开始，随着行星的开始，随着行星的开始，较温暖的化学因素可能保持可见。正如未来的空间任务Ariel和JWST所观察到的那样，我们介绍了地球的模拟光谱，并表明，尽管无法使用当前的HST数据探究这种化学反应，但这些观察者应该在不太遥远的将来使其成为可能。
We present spectral analysis of the transiting Saturn-mass planet WASP-117b, observed with the G141 grism of Wide Field Camera 3 (WFC3) on the Hubble Space Telescope. We reduce and fit the extracted spectrum from the raw transmission data using the open-source software Iraclis before performing a fully Bayesian retrieval using the publicly available analysis suite TauREx 3.0. We detect water vapour alongside a layer of fully opaque cloud, retrieving a terminator temperature of 833 K. In order to quantify the statistical significance of this detection, we employ the Atmospheric Detectability Index (ADI), deriving a value of 2.30, which provides positive but not strong evidence against the flatline model. Due to the eccentric orbit of WASP-117b, it is likely that chemical and mixing timescales oscillate throughout orbit due to the changing temperature, possibly allowing warmer chemistry to remain visible as the planet begins transit, despite the proximity of its point of ingress to apastron. We present simulated spectra of the planet as would be observed by the future space missions Ariel and JWST and show that, despite not being able to probe such chemistry with current HST data, these observatories should make it possible in the not too distant future.
