论文标题
对于超热木星黄蜂，未检测到一致的大气吸收
No consistent atmospheric absorption detected for the ultra-hot Jupiter WASP-189 b
论文作者
论文摘要
我们观察到LBT上具有百事可乐的超热木星黄蜂189 b的部分转运。我们在多个原子过渡中检测到高度可变的过境信号，包括H-Alpha，Fe I和MgI。该信号与过境的行星气氛不一致。相反，我们建议透射信号是由于不均匀的恒星表面引起的。我们的观察结果表明，常见的光原子示踪剂缺乏高度扩展的大气。尽管WASP-189非常明亮，但由于较小的过境深度和显然紧凑的大气，地球的大气表征将很困难。
We observed a partial transit of the ultra-hot Jupiter WASP-189 b with PEPSI on the LBT. We detect a highly variable transit signal in multiple atomic transitions, including H-alpha, Fe I, and Mg I. The signal is not consistent with a transiting planetary atmosphere. We suggest instead that the in-transit signal is due to an inhomogeneous stellar surface. Our observations demonstrate the lack of a highly extended atmosphere in common optical atomic tracers. Although WASP-189 is very bright, atmospheric characterization of the planet will be difficult due to the small transit depth and apparently compact atmosphere.
