DAY-SIDE z ′-BAND EMISSION AND ECCENTRICITY OF WASP-12b
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Lopez-Morales-2010-DAY-SIDE z '-BAND EM.pdf
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392.75 KB
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Author(s)
Lopez-Morales, Mercedes
Coughlin, Jeffrey L.
Sing, David K.
Burrows, Adam
Apai, Dániel
Rogers, Justin C.
Spiegel, David S.
Adams, Elisabeth Rose
Date Issued
June 2010
Journal
Astrophysical Journal
Publisher
Institute of Physics/American Astronomical Society
Citation
López-Morales, Mercedes, Jeffrey L. Coughlin, David K. Sing, Adam Burrows, Dániel Apai, Justin C. Rogers, David S. Spiegel, and Elisabeth R. Adams. “ DAY-SIDE z ′-BAND EMISSION AND ECCENTRICITY OF WASP-12b .” The Astrophysical Journal 716, no. 1 (May 20, 2010): L36–L40. © 2010 American Astronomical Society.
Version
Final published version
Abstract
We report the detection of the eclipse of the very hot Jupiter WASP-12b via z'-band time-series photometry obtained with the 3.5 m Astrophysical Research Consortium telescope at Apache Point Observatory. We measure a decrease in flux of 0.082% ± 0.015% during the passage of the planet behind the star. That planetary flux is equally well reproduced by atmospheric models with and without extra absorbers, and blackbody models with f ≥ 0.585 ± 0.080. It is therefore necessary to measure the planet at other wavelengths to further constrain its atmospheric properties. The eclipse appears centered at phase phi = 0.5100+0.0072 –0.0061, consistent with an orbital eccentricity of |ecos ω| = 0.016+0.011 –0.009 (see note at the end of Section 4). If the orbit of the planet is indeed eccentric, the large radius of WASP-12b can be explained by tidal heating.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1088/2041-8205/716/1/l36
