The HARPS search for southern extra-solar planets XVII. Super-Earth and Neptune-mass planets in multiple planet systems HD 47 186 and HD 181 433

被引：89
|
作者：
Bouchy, F. [1 ]
Mayor, M. [2 ]
Lovis, C. [2 ]
Udry, S. [2 ]
Benz, W. [3 ]
Bertaux, J. -L. [4 ]
Delfosse, X. [5 ]
Mordasini, C.
Pepe, F. [2 ]
Queloz, D. [2 ]
Segransan, D. [2 ]
机构：
[1] Univ Paris 06, CNRS, UMR7095, Inst Astrophys Paris, F-75014 Paris, France
[2] Univ Geneva, Observ Geneva, CH-1290 Sauverny, Switzerland
[3] Univ Bern, Inst Phys, CH-3012 Bern, Switzerland
[4] CNRS, Serv Aeron, F-91371 Verrieres Le Buisson, France
[5] Univ Grenoble 1, Observ Grenoble, Astrophys Lab, F-38041 Grenoble 9, France
来源：
ASTRONOMY & ASTROPHYSICS | 2009年 / 496卷 / 02期
基金：
瑞士国家科学基金会;
关键词：
stars: planetary systems; techniques: radial velocities; stars: individual: HD 47 186; stars: individual: HD 181 433; DETERMINISTIC MODEL; STARS;
D O I：
10.1051/0004-6361:200810669
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report on the detection of two new multiple planet systems orbiting solar-like stars HD 47 186 and HD 181 433. The first system contains a hot Neptune of 22.78 M-circle plus with a 4.08-day period and a Saturn of 0.35 M-JUP with a 3.7-year period. The second system contains a Super-Earth of 7.5 M-circle plus with a 9.4-day period, a 0.64 M-JUP with a 2.6-year period, and a third companion of 0.54 M-JUP with a period of about 6 years. These detections increase to 20 the number of close-in low-mass exoplanets (below 0.1 M-JUP) and strengthen the fact that 80% of these planets are in multiple planetary systems.
引用
收藏
页码：527 / 531
页数：5
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