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The HARPS search for southern extra-solar planets XXIV. Companions to HD 85390, HD 90156, and HD 103197: a Neptune analog and two intermediate-mass planets

Indexado

WoS	WOS:000286458400123
Scopus	SCOPUS_ID:78651333159

DOI

10.1051/0004-6361/200913521

Año

2011

Tipo

artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras

Abstract

We report the detection of three new extrasolar planets orbiting the solar type stars HD 85390, HD 90156 and HD 103197 with the HARPS spectrograph mounted on the ESO 3.6-m telescope at La Silla observatory. HD 85390 has a planetary companion with a projected intermediate mass (42.0 M-circle plus) on a 788-day orbit (a = 1.52 AU) with an eccentricity of 0.41, for which there is no analog in the solar system. A drift in the data indicates the presence of another companion on a long-period orbit, which is however not covered by our measurements. HD 90156 is orbited by a warm Neptune analog with a minimum mass of 17.98 M-circle plus (1.05 M(sic)), a period of 49.8 days (a = 0.25 AU), and an eccentricity of 0.31. HD 103197 has an intermediate-mass planet on a circular orbit (P = 47.8 d, M sin i = 31.2 M-circle plus). We discuss the formation of planets of intermediate mass (similar to 30-100 M-circle plus), which should be rare inside a few AU according to core accretion formation models.

Revista

Revista	ISSN
Astronomy & Astrophysics	0004-6361

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Disciplinas de Investigación

WOS
Astronomy & Astrophysics

Scopus
Sin Disciplinas

SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional

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Autores - Afiliación

Ord.	Autor	Género	Institución - País
1	Mordasini, C.	Hombre	Max Planck Inst Astron - Alemania Univ Bern - Suiza Max Planck Institute for Astronomy - Alemania University of Bern - Suiza
2	Mayor, M.	-	Univ Geneva - Suiza
3	Celino, J. J.	Hombre	Univ Geneva - Suiza Université de Genève - Suiza Faculty of Science - Suiza
4	Lovis, Christophe	Hombre	Univ Geneva - Suiza Université de Genève - Suiza Faculty of Science - Suiza
5	Ségransan, Damien	Hombre	Univ Geneva - Suiza Université de Genève - Suiza Faculty of Science - Suiza
6	Benz, W.	Hombre	Univ Bern - Suiza University of Bern - Suiza
7	Bertaux, Jean-Loup	Hombre	Univ Versailles Saint Quentin - Francia Universite de Versailles Saint-Quentin-en-Yvelines - Francia
8	Bouchy, Francois	Hombre	UNIV PARIS 06 - Francia Institut d 'Astrophysique de Paris - Francia Institut d’Astrophysique de Paris - Francia
9	Curto, Gaspare Lo	Hombre	ESO - Chile European Southern Observatory Santiago - Chile Observatorio Europeo Austral - Chile
10	Moutou, Claire	Mujer	Lab Astrophys Marseille - Francia Laboratoire d'Astrophysique de Marseille - Francia
11	Naef, Dominique	-	Univ Geneva - Suiza ESO - Chile Université de Genève - Suiza European Southern Observatory Santiago - Chile Observatorio Europeo Austral - Chile Faculty of Science - Suiza
12	Pepe, Francesco A.	Hombre	Univ Geneva - Suiza Université de Genève - Suiza Faculty of Science - Suiza
13	Queloz, Didier	Hombre	Univ Geneva - Suiza Université de Genève - Suiza Faculty of Science - Suiza
14	Santos, Nuno C.	Hombre	Univ Porto - Portugal Universidade do Porto, Centro de Astrofísica - Portugal Centro de Astrofísica da Universidade do Porto - Portugal

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Financiamiento

Fuente
Alexander von Humboldt Foundation
European Research Council/European Community
Fundacao para a Ciencia e a Tecnologia (FCT), Portugal
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

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Agradecimientos

Agradecimiento
We thank the different observers from other HARPS GTO subprograms, who have also measured the stars presented here, and the observers of HD 85390 at CORALIE. We thank Xavier Dumusque for helpful input. We thank the Swiss National Research Foundation (FNRS) for its continuous support. Christoph Mordasini acknowledges the financial support as a fellow of the Alexander von Humboldt foundation. Nuno C. Santos would like to acknowledge the support by the European Research Council/European Community under the FP7 through a Starting Grant, as well as from Fundacao para a Ciencia e a Tecnologia (FCT), Portugal, through program Ciencia 2007, and in the form of grants reference PTDC/CTE-AST/098528/2008 and PTDC/CTE-AST/098604/2008. We thank an anonymous referee for helpful comments.

Agradecimiento

We thank the different observers from other HARPS GTO subprograms, who have also measured the stars presented here, and the observers of HD 85390 at CORALIE. We thank Xavier Dumusque for helpful input. We thank the Swiss National Research Foundation (FNRS) for its continuous support. Christoph Mordasini acknowledges the financial support as a fellow of the Alexander von Humboldt foundation. Nuno C. Santos would like to acknowledge the support by the European Research Council/European Community under the FP7 through a Starting Grant, as well as from Fundacao para a Ciencia e a Tecnologia (FCT), Portugal, through program Ciencia 2007, and in the form of grants reference PTDC/CTE-AST/098528/2008 and PTDC/CTE-AST/098604/2008. We thank an anonymous referee for helpful comments.