THE TRANSIT LIGHT CURVE PROJECT. XIV. CONFIRMATION OF ANOMALOUS RADII FOR THE EXOPLANETS TRES-4b, HAT-P-3b, AND WASP-12b
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Author(s)
Chan, Tucker R.
Ingemyr, Mikael
Winn, Joshua Nathan
Holman, Matthew J.
Esquerdo, G. A.
Everett, Mark E.
Sanchis Ojeda, Roberto
Date Issued
June 2011
Journal
Astronomical Journal
Publisher
Institute of Physics Publishing
Citation
Chan, Tucker et al. “THE TRANSIT LIGHT-CURVE PROJECT. XIV. CONFIRMATION OF ANOMALOUS RADII FOR THE EXOPLANETS TrES-4b, HAT-P-3b, AND WASP-12b.” The Astronomical Journal 141.6 (2011): 179. Web.
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Author's final manuscript
Abstract
We present transit photometry of three exoplanets, TrES-4b, HAT-P-3b, and WASP-12b, allowing for refined estimates of the systems' parameters. TrES-4b and WASP-12b were confirmed to be "bloated" planets, with radii of 1.706 [plus-minus] 0.056R [subscript Jup] and 1.736 [plus-minus] 0.092R [subscript Jup], respectively. These planets are too large to be explained with standard models of gas giant planets. In contrast, HAT-P-3b has a radius of 0.827 [plus-minus] 0.055R [subscript Jup], smaller than a pure hydrogen-helium planet and indicative of a highly metal-enriched composition. Analyses of the transit timings revealed no significant departures from strict periodicity. For TrES-4, our relatively recent observations allow for improvement in the orbital ephemerides, which is useful for planning future observations.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
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DOI of Published Version
https://doi.org/10.1088/0004-6256/141/6/179
