HST PanCET Program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b
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....
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ndltd-arizona.edu-oai-arizona.openrepository.com-10150-6230952017-04-13T03:00:35Z HST PanCET Program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b Wakeford, H. R. Stevenson, K. B. Lewis, N. K. Sing, D. K. López-Morales, M. Marley, M. Kataria, T. Mandell, A. Ballester, G. E. Barstow, J. Ben-Jaffel, L. Bourrier, V. Buchhave, L. A. Ehrenreich, D. Evans, T. García Muñoz, A. Henry, G. Knutson, H. Lavvas, P. Lecavelier des Etangs, A. Nikolov, N. Sanz-Forcada, J. Univ Arizona, Dept Planetary Sci Univ Arizona, Lunar & Planetary Lab planets and satellites: atmospheres planets and satellites: individual (WASP-101b) techniques: spectroscopic 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. 2017-01-20 Article HST PanCET Program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b 2017, 835 (1):L12 The Astrophysical Journal 2041-8213 10.3847/2041-8213/835/1/L12 http://hdl.handle.net/10150/623095 http://arizona.openrepository.com/arizona/handle/10150/623095 The Astrophysical Journal en http://stacks.iop.org/2041-8205/835/i=1/a=L12?key=crossref.52b2019220c4a7c110a517df8b5eff1c © 2017. The American Astronomical Society. All rights reserved. IOP PUBLISHING LTD |
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NDLTD |
language |
en |
sources |
NDLTD |
topic |
planets and satellites: atmospheres planets and satellites: individual (WASP-101b) techniques: spectroscopic |
spellingShingle |
planets and satellites: atmospheres planets and satellites: individual (WASP-101b) techniques: spectroscopic Wakeford, H. R. Stevenson, K. B. Lewis, N. K. Sing, D. K. López-Morales, M. Marley, M. Kataria, T. Mandell, A. Ballester, G. E. Barstow, J. Ben-Jaffel, L. Bourrier, V. Buchhave, L. A. Ehrenreich, D. Evans, T. García Muñoz, A. Henry, G. Knutson, H. Lavvas, P. Lecavelier des Etangs, A. Nikolov, N. Sanz-Forcada, J. HST PanCET Program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b |
description |
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. |
author2 |
Univ Arizona, Dept Planetary Sci |
author_facet |
Univ Arizona, Dept Planetary Sci Wakeford, H. R. Stevenson, K. B. Lewis, N. K. Sing, D. K. López-Morales, M. Marley, M. Kataria, T. Mandell, A. Ballester, G. E. Barstow, J. Ben-Jaffel, L. Bourrier, V. Buchhave, L. A. Ehrenreich, D. Evans, T. García Muñoz, A. Henry, G. Knutson, H. Lavvas, P. Lecavelier des Etangs, A. Nikolov, N. Sanz-Forcada, J. |
author |
Wakeford, H. R. Stevenson, K. B. Lewis, N. K. Sing, D. K. López-Morales, M. Marley, M. Kataria, T. Mandell, A. Ballester, G. E. Barstow, J. Ben-Jaffel, L. Bourrier, V. Buchhave, L. A. Ehrenreich, D. Evans, T. García Muñoz, A. Henry, G. Knutson, H. Lavvas, P. Lecavelier des Etangs, A. Nikolov, N. Sanz-Forcada, J. |
author_sort |
Wakeford, H. R. |
title |
HST PanCET Program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b |
title_short |
HST PanCET Program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b |
title_full |
HST PanCET Program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b |
title_fullStr |
HST PanCET Program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b |
title_full_unstemmed |
HST PanCET Program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b |
title_sort |
hst pancet program: a cloudy atmosphere for the promising jwst target wasp-101b |
publisher |
IOP PUBLISHING LTD |
publishDate |
2017 |
url |
http://hdl.handle.net/10150/623095 http://arizona.openrepository.com/arizona/handle/10150/623095 |
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