Journal
ASTRONOMY & ASTROPHYSICS
Volume 520, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201014943
Keywords
stars: fundamental parameters; techniques: photometric; techniques: radial velocities; techniques: spectroscopic
Categories
Funding
- Spanish Ministerio de Ciencia e Innovacion [ESP2007-65480-C02-02]
- DLR [50OW0204, 50OW0603, 50QP0701]
- CNRS/INSU
- French National Research Agency [ANR-08-JCJC-0102-01]
- ESA PRODEX
- Swiss National Science Foundation
- CNRS/CNES [07/0879-Corot]
- STFC [ST/G002266]
- Belgian Science Policy Office
- Science and Technology Facilities Council [ST/G002266/1] Funding Source: researchfish
- STFC [ST/G002266/1] Funding Source: UKRI
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Context. The space telescope CoRoT searches for transiting extrasolar planets by continuously monitoring the optical flux of thousands of stars in several fields of view. Aims. We report the discovery of CoRoT-10b, a giant planet on a highly eccentric orbit (e = 0.53 +/- 0.04) revolving in 13.24 days around a faint (V = 15.22) metal-rich K1V star. Methods. We used CoRoT photometry, radial velocity observations taken with the HARPS spectrograph, and UVES spectra of the parent star to derive the orbital, stellar, and planetary parameters. Results. We derive a radius of the planet of 0.97 +/- 0.07 R-Jup and a mass of 2.75 +/- 0.16 M-Jup. The bulk density,rho(p) = 3.70 +/- 0.83 g cm(-3), is similar to 2.8 that of Jupiter. The core of CoRoT-10b could contain up to 240 M-circle plus of heavy elements. Moving along its eccentric orbit, the planet experiences a 10.6-fold variation in insolation. Owing to the long circularisation time, tau(circ) > 7 Gyr, a resonant perturber is not required to excite and maintain the high eccentricity of CoRoT-10b.
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