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Title:
Hunting for the lowest-mass exoplanets
Authors:
Pepe, Francesco; Mayor, Michel; Lovis, Christophe; Benz, Willy; Bouchy, François; Dumusque, Xavier; Queloz, Didier; Santos, Nuno C.; Ségransan, Damien; Udry, Stéphane
Affiliation:
AA(Observatoire Astronomique de l'Université de Genève, 51, ch. des Maillettes, CH-1290 Versoix, Switzerland, ), AB(Observatoire Astronomique de l'Université de Genève, 51, ch. des Maillettes, CH-1290 Versoix, Switzerland), AC(Observatoire Astronomique de l'Université de Genève, 51, ch. des Maillettes, CH-1290 Versoix, Switzerland), AD(Physikalisches Institut der Universität Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland), AE(Institut d'Astrophysique de Paris, 98bis, bd Arago, F-75014 Paris, France), AF(Observatoire Astronomique de l'Université de Genève, 51, ch. des Maillettes, CH-1290 Versoix, Switzerland), AG(Observatoire Astronomique de l'Université de Genève, 51, ch. des Maillettes, CH-1290 Versoix, Switzerland), AH(Centro de Astrofísica da Universidade do Porto (CAUP), Rua das Estrelas, P-4150-762 Porto, Portugal), AI(Observatoire Astronomique de l'Université de Genève, 51, ch. des Maillettes, CH-1290 Versoix, Switzerland), AJ(Observatoire Astronomique de l'Université de Genève, 51, ch. des Maillettes, CH-1290 Versoix, Switzerland)
Publication:
The Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution, Proceedings of the International Astronomical Union, IAU Symposium, Volume 276, p. 13-24
Publication Date:
11/2011
Origin:
CUP
Keywords:
techniques: radial velocities, planetary systems
Abstract Copyright:
(c) 2011: Copyright © International Astronomical Union 2011
DOI:
10.1017/S1743921311019879
Bibliographic Code:
2011IAUS..276...13P

Abstract

In order to understand general planet characteristics and constrain formation models it is necessary to scan over the widest possible parameter range of discovered systems. Due to detection biases, the domain of very-low mass planets had remained poorly explored. Only with improving measurement precision it has been possible to enter in the sub-Neptune mass range. The HARPS planet search program has been particularly efficient in detecting such ice giants and super earths. The present talk will summarize the obtained results and the characteristics of the low-mass population of exoplanets.

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