The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)

Lalitha, S.; Baroch, David; Morales, Juan Carlos; Passegger, V.M.; Bauer, Florian Franz; Cardona Guillén, C.; Dreizler, Stefan; Oshagh, M.; Reiners, Ansgar; Ribas, Ignasi; Caballero, J. A.; Quirrenbach, Andreas; Amado, Pedro J.; Béjar, Victor J. S.; Colomé, J.; Cortés-Contreras, M.; Galadí-Enriquez, D.; González-Cuesta, L.; Guenther, E. W.; Hagen, Hans-Jürgen; Henning, Thomas; Herrero, Enrique; Husser, T. O.; Jeffers, Sandra V.; Kaminski, Adrian; Kürster, M.; Lafarga, M.; Lodieu, Nicolas; López González, Maria J.; Montes, David; Perger, M.; Rosich, Albert; Rodríguez Martínez, Eloy; Rodríguez-López, Cristina; Schmitt, Jürgen H. M. M.; Tal-Or, Lev; Zechmeister, Mathias

The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)

Although M dwarfs are known for high levels of stellar activity, they are ideal targets for the search of low-mass exoplanets with the radial velocity (RV) method. We report the discovery of a planetary-mass companion around LSPM J2116+0234 (M3.0 V) and confirm the existence of a planet orbiting GJ...

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Autores:	Lalitha, S., Baroch, David, Morales, Juan Carlos, Passegger, V.M., Bauer, Florian Franz, Cardona Guillén, C., Dreizler, Stefan, Oshagh, M., Reiners, Ansgar, Ribas, Ignasi, Caballero, J. A., Quirrenbach, Andreas, Amado, Pedro J., Béjar, Victor J. S., Colomé, J., Cortés-Contreras, M., Galadí-Enriquez, D., González-Cuesta, L., Guenther, E. W., Hagen, Hans-Jürgen, Henning, Thomas, Herrero, Enrique, Husser, T. O., Jeffers, Sandra V., Kaminski, Adrian, Kürster, M., Lafarga, M., Lodieu, Nicolas, López González, Maria J., Montes, David, Perger, M., Rosich, Albert, Rodríguez Martínez, Eloy, Rodríguez-López, Cristina, Schmitt, Jürgen H. M. M., Tal-Or, Lev, Zechmeister, Mathias
Tipo de recurso:	artículo
Estado:	Versión publicada
Fecha de publicación:	2019
País:	España
Institución:	Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:	DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:	oai:dnet:digitalcsic_::4ec1d098cce46c029e112b259662e5dc
Acceso en línea:	http://hdl.handle.net/10261/193406
Access Level:	acceso abierto
Palabra clave:	Stars: individual: GJ 686 Stars: individual: LSPM J2116+0234 Stars: low-mass Techniques: radial velocities Planetary systems Stars: activity

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network_acronym_str	ES
network_name_str	España
repository_id_str
dc.title.none.fl_str_mv	The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
title	The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
spellingShingle	The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421) Lalitha, S. Stars: individual: GJ 686 Stars: individual: LSPM J2116+0234 Stars: low-mass Techniques: radial velocities Planetary systems Stars: activity
title_short	The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
title_full	The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
title_fullStr	The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
title_full_unstemmed	The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
title_sort	The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
dc.creator.none.fl_str_mv	Lalitha, S. Baroch, David Morales, Juan Carlos Passegger, V.M. Bauer, Florian Franz Cardona Guillén, C. Dreizler, Stefan Oshagh, M. Reiners, Ansgar Ribas, Ignasi Caballero, J. A. Quirrenbach, Andreas Amado, Pedro J. Béjar, Victor J. S. Colomé, J. Cortés-Contreras, M. Galadí-Enriquez, D. González-Cuesta, L. Guenther, E. W. Hagen, Hans-Jürgen Henning, Thomas Herrero, Enrique Husser, T. O. Jeffers, Sandra V. Kaminski, Adrian Kürster, M. Lafarga, M. Lodieu, Nicolas López González, Maria J. Montes, David Perger, M. Rosich, Albert Rodríguez Martínez, Eloy Rodríguez-López, Cristina Schmitt, Jürgen H. M. M. Tal-Or, Lev Zechmeister, Mathias
author	Lalitha, S.
author_facet	Lalitha, S. Baroch, David Morales, Juan Carlos Passegger, V.M. Bauer, Florian Franz Cardona Guillén, C. Dreizler, Stefan Oshagh, M. Reiners, Ansgar Ribas, Ignasi Caballero, J. A. Quirrenbach, Andreas Amado, Pedro J. Béjar, Victor J. S. Colomé, J. Cortés-Contreras, M. Galadí-Enriquez, D. González-Cuesta, L. Guenther, E. W. Hagen, Hans-Jürgen Henning, Thomas Herrero, Enrique Husser, T. O. Jeffers, Sandra V. Kaminski, Adrian Kürster, M. Lafarga, M. Lodieu, Nicolas López González, Maria J. Montes, David Perger, M. Rosich, Albert Rodríguez Martínez, Eloy Rodríguez-López, Cristina Schmitt, Jürgen H. M. M. Tal-Or, Lev Zechmeister, Mathias
author_role	author
author2	Baroch, David Morales, Juan Carlos Passegger, V.M. Bauer, Florian Franz Cardona Guillén, C. Dreizler, Stefan Oshagh, M. Reiners, Ansgar Ribas, Ignasi Caballero, J. A. Quirrenbach, Andreas Amado, Pedro J. Béjar, Victor J. S. Colomé, J. Cortés-Contreras, M. Galadí-Enriquez, D. González-Cuesta, L. Guenther, E. W. Hagen, Hans-Jürgen Henning, Thomas Herrero, Enrique Husser, T. O. Jeffers, Sandra V. Kaminski, Adrian Kürster, M. Lafarga, M. Lodieu, Nicolas López González, Maria J. Montes, David Perger, M. Rosich, Albert Rodríguez Martínez, Eloy Rodríguez-López, Cristina Schmitt, Jürgen H. M. M. Tal-Or, Lev Zechmeister, Mathias
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 author author author author author author author author author author author author author
dc.contributor.none.fl_str_mv	Generalitat de Catalunya Israel Science Foundation German Research Foundation Ministerio de Economía y Competitividad (España) European Commission Ministerio de Ciencia, Innovación y Universidades (España) Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv	Stars: individual: GJ 686 Stars: individual: LSPM J2116+0234 Stars: low-mass Techniques: radial velocities Planetary systems Stars: activity
topic	Stars: individual: GJ 686 Stars: individual: LSPM J2116+0234 Stars: low-mass Techniques: radial velocities Planetary systems Stars: activity
description	Although M dwarfs are known for high levels of stellar activity, they are ideal targets for the search of low-mass exoplanets with the radial velocity (RV) method. We report the discovery of a planetary-mass companion around LSPM J2116+0234 (M3.0 V) and confirm the existence of a planet orbiting GJ 686 (BD+18 3421; M1.0 V). The discovery of the planet around LSPM J2116+0234 is based on CARMENES RV observations in the visual and near-infrared channels. We confirm the planet orbiting around GJ 686 by analyzing the RV data spanning over two decades of observationsfrom CARMENES VIS, HARPS-N, HARPS, and HIRES. We find planetary signals at 14.44 and 15.53 d in the RV data for LSPM J2116+0234 and GJ 686, respectively. Additionally, the RV, photometric time series, and various spectroscopic indicators show hints of variations of 42 d for LSPM J2116+0234 and 37 d for GJ 686, which we attribute to the stellar rotation periods. The orbital parameters of the planets are modeled with Keplerian fits together with correlated noise from the stellar activity. A mini-Neptune with a minimum mass of 11.8 M orbits LSPM J2116+0234 producing a RV semi-amplitude of 6.19 m s, while a super-Earth of mass 6.6 M orbits GJ 686 and produces a RV semi-amplitude of 3.0 m s. Both LSPM J2116+0234 and GJ 686 have planetary companions populating the regime of exoplanets with masses lower than 15 M and orbital periods <20 d.© ESO 2019.
publishDate	2019
dc.date.none.fl_str_mv	2019 2019 2019 2019
dc.type.none.fl_str_mv	info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion
format	article
status_str	publishedVersion
dc.identifier.none.fl_str_mv	http://hdl.handle.net/10261/193406
url	http://hdl.handle.net/10261/193406
dc.language.none.fl_str_mv	Inglés
language_invalid_str_mv	Inglés
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dc.rights.none.fl_str_mv	info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv	EDP Sciences
publisher.none.fl_str_mv	EDP Sciences
dc.source.none.fl_str_mv	reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC)
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spelling	The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)Lalitha, S.Baroch, DavidMorales, Juan CarlosPassegger, V.M.Bauer, Florian FranzCardona Guillén, C.Dreizler, StefanOshagh, M.Reiners, AnsgarRibas, IgnasiCaballero, J. A.Quirrenbach, AndreasAmado, Pedro J.Béjar, Victor J. S.Colomé, J.Cortés-Contreras, M.Galadí-Enriquez, D.González-Cuesta, L.Guenther, E. W.Hagen, Hans-JürgenHenning, ThomasHerrero, EnriqueHusser, T. O.Jeffers, Sandra V.Kaminski, AdrianKürster, M.Lafarga, M.Lodieu, NicolasLópez González, Maria J.Montes, DavidPerger, M.Rosich, AlbertRodríguez Martínez, EloyRodríguez-López, CristinaSchmitt, Jürgen H. M. M.Tal-Or, LevZechmeister, MathiasStars: individual: GJ 686Stars: individual: LSPM J2116+0234Stars: low-massTechniques: radial velocitiesPlanetary systemsStars: activityAlthough M dwarfs are known for high levels of stellar activity, they are ideal targets for the search of low-mass exoplanets with the radial velocity (RV) method. We report the discovery of a planetary-mass companion around LSPM J2116+0234 (M3.0 V) and confirm the existence of a planet orbiting GJ 686 (BD+18 3421; M1.0 V). The discovery of the planet around LSPM J2116+0234 is based on CARMENES RV observations in the visual and near-infrared channels. We confirm the planet orbiting around GJ 686 by analyzing the RV data spanning over two decades of observationsfrom CARMENES VIS, HARPS-N, HARPS, and HIRES. We find planetary signals at 14.44 and 15.53 d in the RV data for LSPM J2116+0234 and GJ 686, respectively. Additionally, the RV, photometric time series, and various spectroscopic indicators show hints of variations of 42 d for LSPM J2116+0234 and 37 d for GJ 686, which we attribute to the stellar rotation periods. The orbital parameters of the planets are modeled with Keplerian fits together with correlated noise from the stellar activity. A mini-Neptune with a minimum mass of 11.8 M orbits LSPM J2116+0234 producing a RV semi-amplitude of 6.19 m s, while a super-Earth of mass 6.6 M orbits GJ 686 and produces a RV semi-amplitude of 3.0 m s. Both LSPM J2116+0234 and GJ 686 have planetary companions populating the regime of exoplanets with masses lower than 15 M and orbital periods <20 d.© ESO 2019.L.S. acknowledges support from the Deutsche Forschungsgemeinschaft under DFG DR 281/32-1. CARMENES is an instrument for the Centro Astronomico Hispano-Aleman de Calar Alto (CAHA, Almeria, Spain). CARMENES is funded by the German Max-Planck-Gesellschaft (MPG), the Spanish Consejo Superior de Investigaciones Cientificas (CSIC), the European Union through FEDER/ERF FICTS-2011-02 funds, and the members of the CARMENES Consortium (Max-Planck-Institut fur Astronomie, Instituto de Astrofisica de Andalucia, Landessternwarte Konigstuhl, Institut de Ciencies de l'Espai, Insitut fur Astrophysik Gottingen, Universidad Complutense de Madrid, Thuringer Landessternwarte Tautenburg, Instituto de Astrofisica de Canarias, Hamburger Sternwarte, Centro de Astrobiologia and Centro Astronomico Hispano-Aleman), with additional contributions by the Spanish Ministry of Economy, the German Science Foundation through the Major Research Instrumentation Programme and DFG Research Unit FOR2544 >Blue Planets around Red Stars>, the Klaus Tschira Stiftung, the states of Baden-Wurttemberg and Niedersachsen, and by the Junta de Andalucia. Data were partly obtained with the MONET/South telescope of the MOnitoring NEtwork of Telescopes, funded by the Alfried Krupp von Bohlen und Halbach Foundation, Essen, and operated by the Georg-August-Universitat Gottingen, the McDonald Observatory of the University of Texas at Austin, and the South African Astronomical Observatory. Data were partly collected with the 90 cm telescope at Sierra Nevada Observatory (SNO) operated by the Instituto de Astrofifica de Andalucia (IAA). We acknowledge financial support from the Spanish Ministry for Science, Innovation and Universities (MCIU) AYA2015-69350-C3-2-P, ESP2016-80435-C2-1-R, ESP2016-80435-C2-2-R, AYA2016-79425-C3-1/2/3-P, ESP2017-87676-C05-02-R, ESP2017-87143-R, BES-2017-082610, SEV-2015-0548-17-2, Generalitat de Catalunya/CERCA programme; Agencia de Gestio d'Ajuts Universitaris i de Recerca of the Generalitat de Catalunya through grant 2018FI_B_00188, and the Israel Science Foundation through grant 848/16. This work makes use of data from the HARPS-N Project, a collaboration between the Astronomical Observatory of the Geneva University (lead), the CfA in Cambridge, the Universities of St. Andrews and Edinburgh, the Queens University of Belfast, and the TNG-INAF Observatory; from observations obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation; from observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes 183.C-0437(A) and 072.C-0488(E); from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.Peer ReviewedEDP SciencesGeneralitat de CatalunyaIsrael Science FoundationGerman Research FoundationMinisterio de Economía y Competitividad (España)European CommissionMinisterio de Ciencia, Innovación y Universidades (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2019201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/193406reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2015-69350-C3-2-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2016-80435-C2-1-Rinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2016-80435-C2-2-Rinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-79425-C3-1info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-87676-C05-02-Rinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-87143-Rinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/SEV-2015-0548-17-2http://dx.doi.org/10.1051/0004-6361/201935534Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::4ec1d098cce46c029e112b259662e5dc2026-05-22T06:33:51Z
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The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)

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