The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target stars

Aims. We determine the radii and masses of 293 nearby, bright M dwarfs of the CARMENES survey. This is the first time that such a large and homogeneous high-resolution (R > 80, 000) spectroscopic survey has been used to derive these fundamental stellar parameters. Methods. We derived the radii us...

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Autores: Schweitzer, A., Passegger, V.M:, Cifuentes, C., Béjar, V.J.S., Cortés Contreras, Miriam, Caballero, J. A., Burgo, C. del, Czesla, S., Kürster, M., Montes Gutiérrez, David, Zapatero Osorio, M.R., Ribas, I., Reiners, A., Quirrenbach, A., Amado, P.J., Aceituno, J., Anglada Escudé, G., Bauer, F.F., Dreizler, S., Jeffers, S.V., Guenther, E.W., Henning, T., Kaminski, A., Lafarga, M., Marfil, E., Morales, J.C., Schmitt, J.H.M.M., Seifert, W., Solano, E., Tabernero, H.M., Zechmeister, M.
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/13568
Acceso en línea:https://hdl.handle.net/20.500.14352/13568
Access Level:acceso abierto
Palabra clave:52
M-circle-dot
Detached eclipsing binaries
Parsec evolutionary tracks
Doppler follow-up
Absolute dimensions
Accurate masses
Sky survey
Stellar evolution
Massive stars
Models
Astrofísica
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oai_identifier_str oai:docta.ucm.es:20.500.14352/13568
network_acronym_str ES
network_name_str España
repository_id_str
spelling The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target starsSchweitzer, A.Passegger, V.M:Cifuentes, C.Béjar, V.J.S.Cortés Contreras, MiriamCaballero, J. A.Burgo, C. delCzesla, S.Kürster, M.Montes Gutiérrez, DavidZapatero Osorio, M.R.Ribas, I.Reiners, A.Quirrenbach, A.Amado, P.J.Aceituno, J.Anglada Escudé, G.Bauer, F.F.Dreizler, S.Jeffers, S.V.Guenther, E.W.Henning, T.Kaminski, A.Lafarga, M.Marfil, E.Morales, J.C.Schmitt, J.H.M.M.Seifert, W.Solano, E.Tabernero, H.M.Zechmeister, M.52M-circle-dotDetached eclipsing binariesParsec evolutionary tracksDoppler follow-upAbsolute dimensionsAccurate massesSky surveyStellar evolutionMassive starsModelsAstrofísicaAims. We determine the radii and masses of 293 nearby, bright M dwarfs of the CARMENES survey. This is the first time that such a large and homogeneous high-resolution (R > 80, 000) spectroscopic survey has been used to derive these fundamental stellar parameters. Methods. We derived the radii using Stefan-Boltzmann’s law. We obtained the required effective temperatures T_(eff) from a spectral analysis and we obtained the required luminosities L from integrated broadband photometry together with the Gaia DR2 parallaxes. The mass was then determined using a mass-radius relation that we derived from eclipsing binaries known in the literature. We compared this method with three other methods: (1) We calculated the mass from the radius and the surface gravity log g, which was obtained from the same spectral analysis as T_(eff). (2) We used a widely used infrared mass-magnitude relation. (3) We used a Bayesian approach to infer stellar parameters from the comparison of the absolute magnitudes and colors of our targets with evolutionary models. Results. Between spectral types M0 V and M7 V our radii cover the range 0.1 Rꙩ < R < 0.6 Rꙩ with an error of 2–3% and our masses cover 0.09 Mꙩ < M < 0.6 Mꙩ with an error of 3–5%. We find good agreement between the masses determined with these different methods for most of our targets. Only the masses of very young objects show discrepancies. This can be well explained with the assumptions that we used for our methods.EDP Sciences S AUniversidad Complutense de Madrid20192019-05-0120192019-05-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/13568reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/135682026-06-02T12:44:21Z
dc.title.none.fl_str_mv The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target stars
title The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target stars
spellingShingle The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target stars
Schweitzer, A.
52
M-circle-dot
Detached eclipsing binaries
Parsec evolutionary tracks
Doppler follow-up
Absolute dimensions
Accurate masses
Sky survey
Stellar evolution
Massive stars
Models
Astrofísica
title_short The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target stars
title_full The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target stars
title_fullStr The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target stars
title_full_unstemmed The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target stars
title_sort The CARMENES search for exoplanets around M dwarfs: different roads to radii and masses of the target stars
dc.creator.none.fl_str_mv Schweitzer, A.
Passegger, V.M:
Cifuentes, C.
Béjar, V.J.S.
Cortés Contreras, Miriam
Caballero, J. A.
Burgo, C. del
Czesla, S.
Kürster, M.
Montes Gutiérrez, David
Zapatero Osorio, M.R.
Ribas, I.
Reiners, A.
Quirrenbach, A.
Amado, P.J.
Aceituno, J.
Anglada Escudé, G.
Bauer, F.F.
Dreizler, S.
Jeffers, S.V.
Guenther, E.W.
Henning, T.
Kaminski, A.
Lafarga, M.
Marfil, E.
Morales, J.C.
Schmitt, J.H.M.M.
Seifert, W.
Solano, E.
Tabernero, H.M.
Zechmeister, M.
author Schweitzer, A.
author_facet Schweitzer, A.
Passegger, V.M:
Cifuentes, C.
Béjar, V.J.S.
Cortés Contreras, Miriam
Caballero, J. A.
Burgo, C. del
Czesla, S.
Kürster, M.
Montes Gutiérrez, David
Zapatero Osorio, M.R.
Ribas, I.
Reiners, A.
Quirrenbach, A.
Amado, P.J.
Aceituno, J.
Anglada Escudé, G.
Bauer, F.F.
Dreizler, S.
Jeffers, S.V.
Guenther, E.W.
Henning, T.
Kaminski, A.
Lafarga, M.
Marfil, E.
Morales, J.C.
Schmitt, J.H.M.M.
Seifert, W.
Solano, E.
Tabernero, H.M.
Zechmeister, M.
author_role author
author2 Passegger, V.M:
Cifuentes, C.
Béjar, V.J.S.
Cortés Contreras, Miriam
Caballero, J. A.
Burgo, C. del
Czesla, S.
Kürster, M.
Montes Gutiérrez, David
Zapatero Osorio, M.R.
Ribas, I.
Reiners, A.
Quirrenbach, A.
Amado, P.J.
Aceituno, J.
Anglada Escudé, G.
Bauer, F.F.
Dreizler, S.
Jeffers, S.V.
Guenther, E.W.
Henning, T.
Kaminski, A.
Lafarga, M.
Marfil, E.
Morales, J.C.
Schmitt, J.H.M.M.
Seifert, W.
Solano, E.
Tabernero, H.M.
Zechmeister, M.
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
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
M-circle-dot
Detached eclipsing binaries
Parsec evolutionary tracks
Doppler follow-up
Absolute dimensions
Accurate masses
Sky survey
Stellar evolution
Massive stars
Models
Astrofísica
topic 52
M-circle-dot
Detached eclipsing binaries
Parsec evolutionary tracks
Doppler follow-up
Absolute dimensions
Accurate masses
Sky survey
Stellar evolution
Massive stars
Models
Astrofísica
description Aims. We determine the radii and masses of 293 nearby, bright M dwarfs of the CARMENES survey. This is the first time that such a large and homogeneous high-resolution (R > 80, 000) spectroscopic survey has been used to derive these fundamental stellar parameters. Methods. We derived the radii using Stefan-Boltzmann’s law. We obtained the required effective temperatures T_(eff) from a spectral analysis and we obtained the required luminosities L from integrated broadband photometry together with the Gaia DR2 parallaxes. The mass was then determined using a mass-radius relation that we derived from eclipsing binaries known in the literature. We compared this method with three other methods: (1) We calculated the mass from the radius and the surface gravity log g, which was obtained from the same spectral analysis as T_(eff). (2) We used a widely used infrared mass-magnitude relation. (3) We used a Bayesian approach to infer stellar parameters from the comparison of the absolute magnitudes and colors of our targets with evolutionary models. Results. Between spectral types M0 V and M7 V our radii cover the range 0.1 Rꙩ < R < 0.6 Rꙩ with an error of 2–3% and our masses cover 0.09 Mꙩ < M < 0.6 Mꙩ with an error of 3–5%. We find good agreement between the masses determined with these different methods for most of our targets. Only the masses of very young objects show discrepancies. This can be well explained with the assumptions that we used for our methods.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-05-01
2019
2019-05-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/13568
url https://hdl.handle.net/20.500.14352/13568
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDP Sciences S A
publisher.none.fl_str_mv EDP Sciences S A
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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