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Climate of an ultra hot Jupiter: Spectroscopic phase curve of WASP-18b with HST/WFC3

Abstract:

We present the analysis of a full-orbit, spectroscopic phase curve of the ultra hot Jupiter (UHJ) WASP-18b, obtained with the Wide Field Camera 3 aboard the Hubble Space Telescope. We measured the normalised day-night contrast of the planet as >0.96 in luminosity: the disc-integrated dayside emission from the planet is at 964 ± 25 ppm, corresponding to 2894 ± 30 K, and we place an upper limit on the nightside emission of <32 ppm or 1430 K at the 3σ level. We also find that the peak of the pha...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1051/0004-6361/201834891

Authors


Arcangeli, J More by this author
Desert, J-M More by this author
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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Subgroup:
Atmos Ocean & Planet Physics
Oxford college:
Somerville College
ORCID:
0000-0001-9521-6258
Stevenson, KB More by this author
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Publisher:
EDP Sciences Publisher's website
Journal:
Astronomy and Astrophysics Journal website
Volume:
625
Article number:
A136
Publication date:
2019-05-28
Acceptance date:
2019-04-03
DOI:
EISSN:
1432-0746
ISSN:
0004-6361
Pubs id:
1020368
Local pid:
pubs:1020368
Language:
English
Keywords:

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