Volume 512, March-April 2010
|Number of page(s)||6|
|Section||Planets and planetary systems|
|Published online||30 March 2010|
XXII. Multiple planet systems from the HARPS volume limited sample
ESO – European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany e-mail: email@example.com
2 Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
3 Physikalisches Institut Universität Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
4 Laboratoire d'Astrophysique de Marseille, Traverse du Siphon, 13376 Marseille, France
5 Centro de Astrofisica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
Accepted: 29 December 2009
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 MEarth and a “Neptune” planet with minimum mass of 18 MEarth, 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.
Key words: 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
Based on observations made with the HARPS instrument on the ESO 3.6 m telescope at La Silla (Chile), under the GTO program ID 072.C-0488.
RV tables are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (188.8.131.52) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/512/A48
© ESO, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.