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Discovery of WASP-65b and WASP-75b : two hot Jupiters without highly inflated radii
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(2013) Discovery of WASP-65b and WASP-75b : two hot Jupiters without highly inflated radii. Astronomy & Astrophysics, Volume 559 . A36. doi:10.1051/0004-6361/201322314 ISSN 0004-6361.
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Official URL: http://dx.doi.org/10.1051/0004-6361/201322314
Abstract
We report the discovery of two transiting hot Jupiters, WASP-65b (M_pl = 1.55 +/- 0.16 M_J; R_pl = 1.11 +/- 0.06 R_J), and WASP-75b (M_pl = 1.07 +/- 0.05 M_J; R_pl = 1.27 +/- 0.05 R_J). They orbit their host star every 2.311, and 2.484 days, respectively. The planet host WASP-65 is a G6 star (T_eff = 5600 K, [Fe/H] = -0.07 +/- 0.07, age > 8 Gyr); WASP-75 is an F9 star (T_eff = 6100 K, [Fe/H] = 0.07 +/- 0.09, age of 3 Gyr). WASP-65b is one of the densest known exoplanets in the mass range 0.1 and 2.0 M_J (rho_pl = 1.13 +/- 0.08 rho_J), a mass range where a large fraction of planets are found to be inflated with respect to theoretical planet models. WASP-65b is one of only a handful of planets with masses of around 1.5 M_J, a mass regime surprisingly underrepresented among the currently known hot Jupiters. The radius of Jupiter-mass WASP-75b is slightly inflated (< 10%) as compared to theoretical planet models with no core, and has a density similar to that of Saturn (rho_pl = 0.52 +/- 0.06 rho_J).
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Planetary systems, Extrasolar planets, Stars with planets | ||||
| Journal or Publication Title: | Astronomy & Astrophysics | ||||
| Publisher: | EDP Sciences | ||||
| ISSN: | 0004-6361 | ||||
| Official Date: | 2013 | ||||
| Dates: |
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| Volume: | Volume 559 | ||||
| Article Number: | A36 | ||||
| DOI: | 10.1051/0004-6361/201322314 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Date of first compliant deposit: | 18 April 2016 | ||||
| Date of first compliant Open Access: | 18 April 2016 | ||||
| Funder: | Science and Technology Facilities Council (Great Britain) (STFC), Fonds national de la recherche scientifique (Belgium) (FNRS), Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung [Swiss National Science Foundation] (SNSF), Vanderbilt Office of the Provost, Seventh Framework Programme (European Commission) (FP7), Qatar National Research Fund (QNRF) | ||||
| Grant number: | FRFC 2.5.594.09.F (FNRS), RG226604 (FP7), NPRP-09-476-1-078 (QNRF), PBGEP2-145594 (SNSF) |
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