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dc.contributor.author
Kiefer, F.
dc.contributor.author
Hébrard, G.
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Sahlmann, J.
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Sousa, S. G.
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Forveille, T.
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Santos, N.
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Mayor, M.
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Deleuil, M.
dc.contributor.author
Wilson, P. A.
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Dalal, S.
dc.contributor.author
Diaz, Rodrigo Fernando
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dc.contributor.author
Henry, G. W.
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Hagelberg, J.
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Hobson, M. J.
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Demangeon, O.
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Bourrier, V.
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Delfosse, X.
dc.contributor.author
Arnold, L.
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Astudillo Defru, Nicola
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Beuzit, J. L.
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Boisse, I.
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Bonfils, X.
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Borgniet, S.
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Bouchy, F.
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Courcol, B.
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Ehrenreich, D.
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Hara, N.
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Lagrange, A. M.
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Lovis, C.
dc.contributor.author
Montagnier, G.
dc.date.available
2022-12-28T14:02:28Z
dc.date.issued
2019-11
dc.identifier.citation
Kiefer, F.; Hébrard, G.; Sahlmann, J.; Sousa, S. G.; Forveille, T.; et al.; Detection and characterisation of 54 massive companions with the SOPHIE spectrograph: Seven new brown dwarfs and constraints on the brown dwarf desert; EDP Sciences; Astronomy and Astrophysics; 631; A125; 11-2019; 1-49
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/182699
dc.description.abstract
Context. Brown dwarfs (BD) are substellar objects intermediate between planets and stars with masses of ∼13-80 MJ. While isolated BDs are most likely produced by gravitational collapse in molecular clouds down to masses of a few MJ, a non-negligible fraction of low-mass companions might be formed through the planet-formation channel in protoplanetary discs. The upper mass limit of objects formed within discs is still observationally unknown, the main reason being the strong dearth of BD companions at orbital periods shorter than 10 yr, also known as the BD desert. Aims. To address this question, we aim at determining the best statistics of companions within the 10-100 MJ mass regime and located closer than ∼10 au to the primary star, while minimising observation and selection bias. Methods. We made extensive use of the radial velocity (RV) surveys of northern hemisphere FGK stars within 60 pc of the Sun, performed with the SOPHIE spectrograph at the Observatoire de Haute-Provence. We derived the Keplerian solutions of the RV variations of 54 sources. Public astrometric data of the HIPPARCOS and Gaia missions allowed us to constrain the masses of the companions for most sources. We introduce GASTON, a new method to derive inclination combining RVs and Keplerian and astrometric excess noise from Gaia DR1. Results. We report the discovery of 12 new BD candidates. For five of them, additional astrometric data led to a revision of their mass in the M-dwarf regime. Among the seven remaining objects, four are confirmed BD companions, and three others are likely also in this mass regime. Moreover, we report the detection of 42 M-dwarfs within the range of 90 MJ-0.52 M·. The resulting M sin i-P distribution of BD candidates shows a clear drop in the detection rate below 80-day orbital period. Above that limit, the BD desert appears rather wet, with a uniform distribution of the M sin i. We derive a minimum BD-detection frequency around Solar-like stars of 2.0 ± 0.5%.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
BINARIES: SPECTROSCOPIC
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BROWN DWARFS
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METHODS: NUMERICAL
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METHODS: OBSERVATIONAL
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TECHNIQUES: RADIAL VELOCITIES
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
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dc.title
Detection and characterisation of 54 massive companions with the SOPHIE spectrograph: Seven new brown dwarfs and constraints on the brown dwarf desert
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-01-18T14:10:08Z
dc.identifier.eissn
1432-0746
dc.journal.volume
631
dc.journal.number
A125
dc.journal.pagination
1-49
dc.journal.pais
Francia
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dc.journal.ciudad
París
dc.description.fil
Fil: Kiefer, F.. Institut d’Astrophysique de Paris; Francia
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Fil: Hébrard, G.. Institut d’Astrophysique de Paris; Francia. Université d’Aix-Marseille; Francia
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Fil: Sahlmann, J.. Space Telescope Science Institute; Estados Unidos
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Fil: Sousa, S. G.. Universidad de Porto. Facultad de Ciências; Portugal
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Fil: Forveille, T.. Universite Grenoble Alpes; Francia
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Fil: Santos, N.. Universidad de Porto. Facultad de Ciências; Portugal
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Fil: Mayor, M.. Universidad de Ginebra; Suiza
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Fil: Deleuil, M.. Aix-Marseille Université; Francia
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Fil: Wilson, P. A.. Institut D 'astrophysique de Paris; Francia. University of Warwick; Reino Unido
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Fil: Dalal, S.. Institut D 'astrophysique de Paris; Francia
dc.description.fil
Fil: Diaz, Rodrigo Fernando. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
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Fil: Henry, G. W.. Tennessee State University; Estados Unidos
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Fil: Hagelberg, J.. Swiss Federal Institute of Technology Zurich; Suiza
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Fil: Hobson, M. J.. Aix-Marseille Université; Francia
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Fil: Demangeon, O.. Universidad de Porto. Facultad de Ciências; Portugal
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Fil: Bourrier, V.. Universidad de Ginebra; Suiza
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Fil: Delfosse, X.. Universite Grenoble Alpes; Francia
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Fil: Arnold, L.. Aix Marseille Université; Francia
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Fil: Astudillo Defru, Nicola. Universidad Catolica de la Santisima Concepcion.; Chile
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Fil: Beuzit, J. L.. Aix Marseille Université; Francia
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Fil: Boisse, I.. Aix Marseille Université; Francia
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Fil: Bonfils, X.. Universite Grenoble Alpes; Francia
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Fil: Borgniet, S.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
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Fil: Bouchy, F.. Universidad de Ginebra; Suiza
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Fil: Courcol, B.. Universidad de Ginebra; Suiza
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Fil: Ehrenreich, D.. Universidad de Ginebra; Suiza
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Fil: Hara, N.. Universidad de Ginebra; Suiza
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Fil: Lagrange, A. M.. Universite Grenoble Alpes; Francia
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Fil: Lovis, C.. Universidad de Ginebra; Suiza
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Fil: Montagnier, G.. Institut d’Astrophysique de Paris; Francia. Université d’Aix-Marseille; Francia
dc.journal.title
Astronomy and Astrophysics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201935113
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2019/11/aa35113-19/aa35113-19.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1909.00739
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