The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

Autores
Udry, S.; Dumusque, X.; Lovis, C.; Ségransan, D.; Diaz, Rodrigo Fernando; Benz, W.; Bouchy, F.; Coffinet, A.; Lo Curto, G.; Mayor, M.; Mordasini, C.; Motalebi, F.; Pepe, F.; Queloz, D.; Santos, N.C.; Wyttenbach, A.; Alonso, R.; Collier Cameron, A.; Deleuil, M.; Figueira, P.; Gillon, M.; Moutou, C.; Pollacco, D.; Pompei, E.
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context. We present radial-velocity measurements of eight stars observed with the HARPS Echelle spectrograph mounted on the 3.6-m telescope in La Silla (ESO, Chile). Data span more than ten years and highlight the long-term stability of the instrument. Aims. We search for potential planets orbiting HD 20003, HD 20781, HD 21693, HD 31527, HD 45184, HD 51608, HD 134060 and HD 136352 to increase the number of known planetary systems and thus better constrain exoplanet statistics. Methods. After a preliminary phase looking for signals using generalized Lomb-Scargle periodograms, we perform a careful analysis of all signals to separate bona-fide planets from signals induced by stellar activity and instrumental systematics. We finally secure the detection of all planets using the efficient MCMC available on the Data and Analysis Center for Exoplanets (DACE web-platform), using model comparison whenever necessary. Results. In total, we report the detection of twenty new super-Earth to Neptune-mass planets, with minimum masses ranging from 2 to 30 M Earth and periods ranging from 3 to 1300 days, in multiple systems with two to four planets. Adding CORALIE and HARPS measurements of HD20782 to the already published data, we also improve the characterization of the extremely eccentric Jupiter orbiting this visual companion of HD 20781.
Fil: Udry, S.. Universidad de Ginebra; Suiza
Fil: Dumusque, X.. Universidad de Ginebra; Suiza
Fil: Lovis, C.. Universidad de Ginebra; Suiza
Fil: Ségransan, D.. Universidad de Ginebra; Suiza
Fil: Diaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio(i); Argentina
Fil: Benz, W.. University of Bern; Suiza
Fil: Bouchy, F.. Universidad de Ginebra; Suiza
Fil: Coffinet, A.. Universidad de Ginebra; Suiza
Fil: Lo Curto, G.. No especifíca;
Fil: Mayor, M.. Universidad de Ginebra; Suiza
Fil: Mordasini, C.. University of Bern; Suiza
Fil: Motalebi, F.. Universidad de Ginebra; Suiza
Fil: Pepe, F.. Universidad de Ginebra; Suiza
Fil: Queloz, D.. Universidad de Ginebra; Suiza
Fil: Santos, N.C.. Universidad de Porto; Portugal
Fil: Wyttenbach, A.. Universidad de Ginebra; Suiza
Fil: Alonso, R.. No especifíca;
Fil: Collier Cameron, A.. University of St. Andrews; Reino Unido
Fil: Deleuil, M.. University of St. Andrews; Reino Unido
Fil: Figueira, P.. Universidad de Porto; Portugal
Fil: Gillon, M.. Université de Liège; Bélgica
Fil: Moutou, C.. Centre National de la Recherche Scientifique; Francia
Fil: Pollacco, D.. University of Warwick; Reino Unido
Fil: Pompei, E.. No especifíca;
Materia
METHODS: DATA ANALYSIS
PLANETARY SYSTEMS
STARS: GENERAL
TECHNIQUES: RADIAL VELOCITIES
TECHNIQUES: SPECTROSCOPIC
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/150873
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/150873
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companionsUdry, S.Dumusque, X.Lovis, C.Ségransan, D.Diaz, Rodrigo FernandoBenz, W.Bouchy, F.Coffinet, A.Lo Curto, G.Mayor, M.Mordasini, C.Motalebi, F.Pepe, F.Queloz, D.Santos, N.C.Wyttenbach, A.Alonso, R.Collier Cameron, A.Deleuil, M.Figueira, P.Gillon, M.Moutou, C.Pollacco, D.Pompei, E.METHODS: DATA ANALYSISPLANETARY SYSTEMSSTARS: GENERALTECHNIQUES: RADIAL VELOCITIESTECHNIQUES: SPECTROSCOPIChttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. We present radial-velocity measurements of eight stars observed with the HARPS Echelle spectrograph mounted on the 3.6-m telescope in La Silla (ESO, Chile). Data span more than ten years and highlight the long-term stability of the instrument. Aims. We search for potential planets orbiting HD 20003, HD 20781, HD 21693, HD 31527, HD 45184, HD 51608, HD 134060 and HD 136352 to increase the number of known planetary systems and thus better constrain exoplanet statistics. Methods. After a preliminary phase looking for signals using generalized Lomb-Scargle periodograms, we perform a careful analysis of all signals to separate bona-fide planets from signals induced by stellar activity and instrumental systematics. We finally secure the detection of all planets using the efficient MCMC available on the Data and Analysis Center for Exoplanets (DACE web-platform), using model comparison whenever necessary. Results. In total, we report the detection of twenty new super-Earth to Neptune-mass planets, with minimum masses ranging from 2 to 30 M Earth and periods ranging from 3 to 1300 days, in multiple systems with two to four planets. Adding CORALIE and HARPS measurements of HD20782 to the already published data, we also improve the characterization of the extremely eccentric Jupiter orbiting this visual companion of HD 20781.Fil: Udry, S.. Universidad de Ginebra; SuizaFil: Dumusque, X.. Universidad de Ginebra; SuizaFil: Lovis, C.. Universidad de Ginebra; SuizaFil: Ségransan, D.. Universidad de Ginebra; SuizaFil: Diaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio(i); ArgentinaFil: Benz, W.. University of Bern; SuizaFil: Bouchy, F.. Universidad de Ginebra; SuizaFil: Coffinet, A.. Universidad de Ginebra; SuizaFil: Lo Curto, G.. No especifíca;Fil: Mayor, M.. Universidad de Ginebra; SuizaFil: Mordasini, C.. University of Bern; SuizaFil: Motalebi, F.. Universidad de Ginebra; SuizaFil: Pepe, F.. Universidad de Ginebra; SuizaFil: Queloz, D.. Universidad de Ginebra; SuizaFil: Santos, N.C.. Universidad de Porto; PortugalFil: Wyttenbach, A.. Universidad de Ginebra; SuizaFil: Alonso, R.. No especifíca;Fil: Collier Cameron, A.. University of St. Andrews; Reino UnidoFil: Deleuil, M.. University of St. Andrews; Reino UnidoFil: Figueira, P.. Universidad de Porto; PortugalFil: Gillon, M.. Université de Liège; BélgicaFil: Moutou, C.. Centre National de la Recherche Scientifique; FranciaFil: Pollacco, D.. University of Warwick; Reino UnidoFil: Pompei, E.. No especifíca;EDP Sciences2019-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/150873Udry, S.; Dumusque, X.; Lovis, C.; Ségransan, D.; Diaz, Rodrigo Fernando; et al.; The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions; EDP Sciences; Astronomy and Astrophysics; 622; 1-2019; 1-310004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201731173info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:42:43Zoai:ri.conicet.gov.ar:11336/150873instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:42:43.433CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions
title The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions
spellingShingle The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions
Udry, S.
METHODS: DATA ANALYSIS
PLANETARY SYSTEMS
STARS: GENERAL
TECHNIQUES: RADIAL VELOCITIES
TECHNIQUES: SPECTROSCOPIC
title_short The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions
title_full The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions
title_fullStr The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions
title_full_unstemmed The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions
title_sort The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions
dc.creator.none.fl_str_mv Udry, S.
Dumusque, X.
Lovis, C.
Ségransan, D.
Diaz, Rodrigo Fernando
Benz, W.
Bouchy, F.
Coffinet, A.
Lo Curto, G.
Mayor, M.
Mordasini, C.
Motalebi, F.
Pepe, F.
Queloz, D.
Santos, N.C.
Wyttenbach, A.
Alonso, R.
Collier Cameron, A.
Deleuil, M.
Figueira, P.
Gillon, M.
Moutou, C.
Pollacco, D.
Pompei, E.
author Udry, S.
author_facet Udry, S.
Dumusque, X.
Lovis, C.
Ségransan, D.
Diaz, Rodrigo Fernando
Benz, W.
Bouchy, F.
Coffinet, A.
Lo Curto, G.
Mayor, M.
Mordasini, C.
Motalebi, F.
Pepe, F.
Queloz, D.
Santos, N.C.
Wyttenbach, A.
Alonso, R.
Collier Cameron, A.
Deleuil, M.
Figueira, P.
Gillon, M.
Moutou, C.
Pollacco, D.
Pompei, E.
author_role author
author2 Dumusque, X.
Lovis, C.
Ségransan, D.
Diaz, Rodrigo Fernando
Benz, W.
Bouchy, F.
Coffinet, A.
Lo Curto, G.
Mayor, M.
Mordasini, C.
Motalebi, F.
Pepe, F.
Queloz, D.
Santos, N.C.
Wyttenbach, A.
Alonso, R.
Collier Cameron, A.
Deleuil, M.
Figueira, P.
Gillon, M.
Moutou, C.
Pollacco, D.
Pompei, E.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv METHODS: DATA ANALYSIS
PLANETARY SYSTEMS
STARS: GENERAL
TECHNIQUES: RADIAL VELOCITIES
TECHNIQUES: SPECTROSCOPIC
topic METHODS: DATA ANALYSIS
PLANETARY SYSTEMS
STARS: GENERAL
TECHNIQUES: RADIAL VELOCITIES
TECHNIQUES: SPECTROSCOPIC
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Context. We present radial-velocity measurements of eight stars observed with the HARPS Echelle spectrograph mounted on the 3.6-m telescope in La Silla (ESO, Chile). Data span more than ten years and highlight the long-term stability of the instrument. Aims. We search for potential planets orbiting HD 20003, HD 20781, HD 21693, HD 31527, HD 45184, HD 51608, HD 134060 and HD 136352 to increase the number of known planetary systems and thus better constrain exoplanet statistics. Methods. After a preliminary phase looking for signals using generalized Lomb-Scargle periodograms, we perform a careful analysis of all signals to separate bona-fide planets from signals induced by stellar activity and instrumental systematics. We finally secure the detection of all planets using the efficient MCMC available on the Data and Analysis Center for Exoplanets (DACE web-platform), using model comparison whenever necessary. Results. In total, we report the detection of twenty new super-Earth to Neptune-mass planets, with minimum masses ranging from 2 to 30 M Earth and periods ranging from 3 to 1300 days, in multiple systems with two to four planets. Adding CORALIE and HARPS measurements of HD20782 to the already published data, we also improve the characterization of the extremely eccentric Jupiter orbiting this visual companion of HD 20781.
Fil: Udry, S.. Universidad de Ginebra; Suiza
Fil: Dumusque, X.. Universidad de Ginebra; Suiza
Fil: Lovis, C.. Universidad de Ginebra; Suiza
Fil: Ségransan, D.. Universidad de Ginebra; Suiza
Fil: Diaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio(i); Argentina
Fil: Benz, W.. University of Bern; Suiza
Fil: Bouchy, F.. Universidad de Ginebra; Suiza
Fil: Coffinet, A.. Universidad de Ginebra; Suiza
Fil: Lo Curto, G.. No especifíca;
Fil: Mayor, M.. Universidad de Ginebra; Suiza
Fil: Mordasini, C.. University of Bern; Suiza
Fil: Motalebi, F.. Universidad de Ginebra; Suiza
Fil: Pepe, F.. Universidad de Ginebra; Suiza
Fil: Queloz, D.. Universidad de Ginebra; Suiza
Fil: Santos, N.C.. Universidad de Porto; Portugal
Fil: Wyttenbach, A.. Universidad de Ginebra; Suiza
Fil: Alonso, R.. No especifíca;
Fil: Collier Cameron, A.. University of St. Andrews; Reino Unido
Fil: Deleuil, M.. University of St. Andrews; Reino Unido
Fil: Figueira, P.. Universidad de Porto; Portugal
Fil: Gillon, M.. Université de Liège; Bélgica
Fil: Moutou, C.. Centre National de la Recherche Scientifique; Francia
Fil: Pollacco, D.. University of Warwick; Reino Unido
Fil: Pompei, E.. No especifíca;
description Context. We present radial-velocity measurements of eight stars observed with the HARPS Echelle spectrograph mounted on the 3.6-m telescope in La Silla (ESO, Chile). Data span more than ten years and highlight the long-term stability of the instrument. Aims. We search for potential planets orbiting HD 20003, HD 20781, HD 21693, HD 31527, HD 45184, HD 51608, HD 134060 and HD 136352 to increase the number of known planetary systems and thus better constrain exoplanet statistics. Methods. After a preliminary phase looking for signals using generalized Lomb-Scargle periodograms, we perform a careful analysis of all signals to separate bona-fide planets from signals induced by stellar activity and instrumental systematics. We finally secure the detection of all planets using the efficient MCMC available on the Data and Analysis Center for Exoplanets (DACE web-platform), using model comparison whenever necessary. Results. In total, we report the detection of twenty new super-Earth to Neptune-mass planets, with minimum masses ranging from 2 to 30 M Earth and periods ranging from 3 to 1300 days, in multiple systems with two to four planets. Adding CORALIE and HARPS measurements of HD20782 to the already published data, we also improve the characterization of the extremely eccentric Jupiter orbiting this visual companion of HD 20781.
publishDate 2019
dc.date.none.fl_str_mv 2019-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/150873
Udry, S.; Dumusque, X.; Lovis, C.; Ségransan, D.; Diaz, Rodrigo Fernando; et al.; The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions; EDP Sciences; Astronomy and Astrophysics; 622; 1-2019; 1-31
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/150873
identifier_str_mv Udry, S.; Dumusque, X.; Lovis, C.; Ségransan, D.; Diaz, Rodrigo Fernando; et al.; The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions; EDP Sciences; Astronomy and Astrophysics; 622; 1-2019; 1-31
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201731173
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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