论文标题
HUBBLE WFC3可居住区超级lhs 1140 b的光谱
Hubble WFC3 Spectroscopy of the Habitable-zone Super-Earth LHS 1140 b
论文作者
论文摘要
温带，岩石行星的大气特征是系外行星研究的圣杯。这些世界在传输光谱中的当前仪器中处于我们能力的范围内，并挑战了我们最先进的统计技术。在这里，我们使用哈勃太空望远镜（HST）介绍了温带超级地球1140B的传输光谱。宽场摄像头3（WFC3）G141 G141这个可居住区的Grism数据（t $ _ {\ rm {eq}} $ = 235 K）超级地球（r = 1.7 $ r_ \ oplus $），显示了暂定的水证据。但是，信噪比，因此检测的重要性是低的，恒星污染模型可能会在探测的光谱带上引起调制。我们试图使用这些模型来纠正污染，并发现尽管许多人仍然可以提供水的证据，但有些人可以与数据提供合理的拟合，而无需分子吸收，尽管这些原因中的大多数在可见的地面数据中也具有非物理性的特征。詹姆斯·韦伯（James Webb）太空望远镜（JWST）的未来观察将能够确认或反驳这种大气检测。
Atmospheric characterisation of temperate, rocky planets is the holy grail of exoplanet studies. These worlds are at the limits of our capabilities with current instrumentation in transmission spectroscopy and challenge our state-of-the-art statistical techniques. Here we present the transmission spectrum of the temperate Super-Earth LHS 1140b using the Hubble Space Telescope (HST). The Wide Field Camera 3 (WFC3) G141 grism data of this habitable zone (T$_{\rm{eq}}$ = 235 K) Super-Earth (R = 1.7 $R_\oplus$), shows tentative evidence of water. However, the signal-to-noise ratio, and thus the significance of the detection, is low and stellar contamination models can cause modulation over the spectral band probed. We attempt to correct for contamination using these models and find that, while many still lead to evidence for water, some could provide reasonable fits to the data without the need for molecular absorption although most of these cause also features in the visible ground-based data which are nonphysical. Future observations with the James Webb Space Telescope (JWST) would be capable of confirming, or refuting, this atmospheric detection.
