Journal
ASTRONOMY & ASTROPHYSICS
Volume 512, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/200913523
Keywords
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
Categories
Funding
- European Research Council/European Community [FP7]
- Fundacao para a Ciencia e a Tecnologia (FCT), Portugal
- [PTDC/CTEAST/098528/2008]
- [PTDC/CTE-AST/098604/2008]
- Fundação para a Ciência e a Tecnologia [PTDC/CTE-AST/098604/2008] Funding Source: FCT
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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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