The HARPS search for southern extra-solar planets XXII. Multiple planet systems from the HARPS volume limited sample

被引：81
作者：
Lo Curto, G. [1 ]
Mayor, M. [2 ]
Benz, W. [3 ]
Bouchy, F. [4 ]
Lovis, C. [2 ]
Moutou, C. [4 ]
Naef, D. [1 ,2 ]
Pepe, F. [2 ]
Queloz, D. [2 ]
Santos, N. C. [5 ]
Segransan, D. [2 ]
Udry, S. [2 ]
机构：
[1] European So Observ, D-85748 Garching, Germany
[2] Univ Geneva, Observ Geneva, CH-1290 Sauverny, Switzerland
[3] Univ Bern, Inst Phys, CH-3012 Bern, Switzerland
[4] Lab Astrophys Marseille, F-13376 Marseille, France
[5] Univ Porto, Ctr Astrofis, P-4150762 Oporto, Portugal
来源：
ASTRONOMY & ASTROPHYSICS | 2010年 / 512卷
基金：
欧洲研究理事会;
关键词：
planets and satellites: individual: HD 125612; planets and satellites: individual: HD 215497; planets and satellites: individual: HIP 5158; techniques: radial velocities; techniques: spectroscopic; planets and satellites: general; HOT JUPITER; STARS; COMPANIONS; ROTATION;
D O I：
10.1051/0004-6361/200913523
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the detections of three multiple systems within the HARPS volume-limited sample. Among the six planets discussed in this paper, we have identified a "super-Earth" planet with a minimum mass of 6.6 M(Earth) and a "Neptune" planet with minimum mass of 18 M(Earth), both orbiting their parent stars within a distance of 0.05 AU and a period of approximately four days. These detections strengthen the argument that low-mass planets are primarily found in multiple-planetary systems.
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页数：6
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