The HARPS search for southern extra-solar planets
| Autor: | Francesco Pepe, Nuno C. Santos, Dominique Naef, D. Segransan, C. Lovis, Jean-Pierre Sivan, Michel Mayor, D. Queloz, François Bouchy, G. Lo Curto, Willy Benz, Stéphane Udry, C. Moutou |
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| Rok vydání: | 2005 |
| Předmět: |
Physics
Super-Earth 010504 meteorology & atmospheric sciences Astronomy Astronomy and Astrophysics Astrophysics Planetary system A-type main-sequence star 01 natural sciences Exoplanet Radial velocity 13. Climate action Space and Planetary Science Planet 0103 physical sciences Hot Jupiter 010303 astronomy & astrophysics O-type main-sequence star 0105 earth and related environmental sciences |
| Zdroj: | Astronomy & Astrophysics. 439:367-373 |
| ISSN: | 1432-0746 0004-6361 |
| DOI: | 10.1051/0004-6361:20052826 |
| Popis: | We report the discovery of three new planets, detected through Doppler measurements with the instrument HARPS installed on the ESO 3.6 m telescope, La Silla, Chile. These planets are orbiting the main-sequence stars HD 2638, HD 27894, and HD 63454. The orbital characteristics that best fit the observed data are depicted in this paper, as well as the stellar and planetary parameters. The planets' minimum mass is 0.48, 0.62, and 0.38 M Jup for respectively HD 2638, HD 27894, and HD 63454; the orbital periods are 3.4442, 17.991, and 2.817822 days, corresponding to semi-major axis of 0.044, 0.122, and 0.036 AU, respectively. The observational data are carefully analysed for activity-induced effects and we conclude on the reliability of the observed radial-velocity variations as of exoplanetary origin. These three planets support the correlation between the star metallicity and the presence of planets (especially at short orbital distances), pointing towards the peculiar scenario of formation and migration of hot Jupiters. |
| Databáze: | OpenAIRE |
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