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http://hdl.handle.net/20.500.12386/28695
Titolo: | SOPHIE velocimetry of Kepler transit candidates. XIX. The transiting temperate giant planet KOI-3680b | Autori: | Hébrard, G. BONOMO, ALDO STEFANO Díaz, R. F. Santerne, A. Santos, N. C. Almenara, J. -M. Barros, S. C. C. Boisse, I. Bouchy, F. BRUNO, GIOVANNI Courcol, B. Deleuil, M. Demangeon, O. Guillot, T. Montagnier, G. Moutou, C. Rey, J. Wilson, P. A. |
Data pubblicazione: | 2019 | Rivista: | ASTRONOMY & ASTROPHYSICS | Numero: | 623 | Da pagina:: | A104 | Abstract: | Whereas thousands of transiting giant exoplanets are known today, only a few are well characterized with long orbital periods. Here we present KOI-3680b, a new planet in this category. First identified by the Kepler team as a promising candidate from the photometry of the Kepler spacecraft, we establish here its planetary nature from the radial velocity follow-up secured over 2 yr with the SOPHIE spectrograph at Observatoire de Haute-Provence, France. The combined analysis of the whole dataset allows us to fully characterize this new planetary system. KOI-3680b has an orbital period of 141.2417 ± 0.0001 days, a mass of 1.93 ± 0.20 M<SUB>Jup</SUB>, and a radius of 0.99 ± 0.07 R<SUB>Jup</SUB>. It exhibits a highly eccentric orbit (e = 0.50 ± 0.03) around an early G dwarf. KOI-3680b is the transiting giant planet with the longest period characterized so far around a single star; it offers opportunities to extend studies which were mainly devoted to exoplanets close to their host stars, and to compare both exoplanet populations. | URI: | http://hdl.handle.net/20.500.12386/28695 | URL: | https://www.aanda.org/articles/aa/full_html/2019/03/aa34333-18/aa34333-18.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201834333 | Bibcode ADS: | 2019A&A...623A.104H | Fulltext: | open |
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