期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 835, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/835/1/L12
关键词
planets and satellites: atmospheres; planets and satellites: individual (WASP-101b); techniques: spectroscopic
资金
- NASA [NAS 5-26555]
- NASA Postdoctoral Program at Goddard Space Flight Center
- European Research Council under the European Unions Seventh Framework Programme/ERC [336792]
- Royal Astronomical Society Research Fellowship
- National Centre for Competence in Research PlanetS - Swiss National Science Foundation (SNSF)
- CNES (France) under project PACES
- [GO-14767]
We present results from the first observations of the Hubble Space Telescope (HST) Panchromatic Comparative Exoplanet Treasury program for WASP-101b, a highly inflated hot Jupiter and one of the community targets proposed for the James Webb Space Telescope (JWST) Early Release Science (ERS) program. From a single HST Wide Field Camera 3 observation, we find that the near-infrared transmission spectrum of WASP-101b contains no significant H2O absorption features and we rule out a clear atmosphere at 13 sigma. Therefore, WASP-101b is not an optimum target for a JWST ERS program aimed at observing strong molecular transmission features. We compare WASP-101b to the well-studied and nearly identical hot Jupiter WASP-31b. These twin planets show similar temperature-pressure profiles and atmospheric features in the near-infrared. We suggest exoplanets in the same parameter space as WASP-101b and WASP-31b will also exhibit cloudy transmission spectral features. For future HST exoplanet studies, our analysis also suggests that a lower count limit needs to be exceeded per pixel on the detector in order to avoid unwanted instrumental systematics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据