The HARPS search for southern extra-solar planets

被引：0
|
作者：
Moutou, C
Mayor, M
Bouchy, F
Lovis, C
Pepe, F
Queloz, D
Santos, NC
Udry, S
Benz, W
Lo Curto, G
Naef, D
Ségransan, D
Sivan, JP
机构：
[1] Lab Astrophys Marseille, F-13376 Marseille, France
[2] Observ Geneva, CH-1290 Sauverny, Switzerland
[3] Univ Lisbon, Observ Astron Lisboa, Ctr Astron & Astrofis, P-1349018 Lisbon, Portugal
[4] Univ Bern, Inst Phys, CH-3012 Bern, Switzerland
[5] ESO, Santiago, Chile
来源：
ASTRONOMY & ASTROPHYSICS | 2005年 / 439卷 / 01期
关键词：
stars : individual : HD 2638; stars : individual : HD 27894; HD; 63454; stars : planetary systems techniques : radial velocities; techniques : spectroscopic;
D O I：
10.1051/0004-6361:20052826
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
引用
收藏
页码：367 / 373
页数：7
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