Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups

We present here high resolution echelle spectra taken during three observing runs of 14 single late-type stars identified in our previous studies (Montes et al. 2001b, hereafter Paper I) as possible members of different young stellar kinematic groups (Local Association (20-150 Myr), Ursa Major group...

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Detalles Bibliográficos
Autores: Montes Gutiérrez, David, López Santiago, Javier, Fernández Figueroa, María José, Galves, M. C.
Tipo de recurso: artículo
Fecha de publicación:2001
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/59680
Acceso en línea:https://hdl.handle.net/20.500.14352/59680
Access Level:acceso abierto
Palabra clave:52
Solar-type stars
Main-sequence stars
Ursa-major group
Multiwavelength optical observations
Stellar kinematic groups
Rotation-activity connection
Extreme-ultraviolet sources
Wide-field camera
All-sky survey
Low-mass stars
Astrofísica
Astronomía (Física)
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oai_identifier_str oai:docta.ucm.es:20.500.14352/59680
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spelling Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groupsMontes Gutiérrez, DavidLópez Santiago, JavierFernández Figueroa, María JoséGalves, M. C.52Solar-type starsMain-sequence starsUrsa-major groupMultiwavelength optical observationsStellar kinematic groupsRotation-activity connectionExtreme-ultraviolet sourcesWide-field cameraAll-sky surveyLow-mass starsAstrofísicaAstronomía (Física)We present here high resolution echelle spectra taken during three observing runs of 14 single late-type stars identified in our previous studies (Montes et al. 2001b, hereafter Paper I) as possible members of different young stellar kinematic groups (Local Association (20-150 Myr), Ursa Major group (300 Myr), Hyades supercluster (600 Myr), and IC 2391 supercluster (35 Myr)). Radial velocities have been determined by cross correlation with radial velocity standard stars and used together with precise measurements of proper motions and parallaxes taken from Hipparcos and Tycho-2 Catalogues, to calculate Galactic space motions (U, V, W) and to apply Eggen's kinematic criteria. The chromospheric activity level of these stars have been analysed using the information provided for several optical spectroscopic features (from the CaII H & K toCaII IRT lines) that are formed at different heights in the chromosphere. The Li I λ6707.8 Å line equivalent width (EW) has been determined and compared in the EW(Li I) versus spectral type diagram with the EW(Li I) of stars members of well-known young open clusters of different ages, in order to obtain an age estimation. All these data allow us to analyse in more detail the membership of these stars in the different young stellar kinematic groups. Using both, kinematic and spectroscopic criteria we have confirmed PW And, V368 Cep, V383 Lac, EP Eri, DX Leo, HD 77407, and EK Dra as members of the Local Association and V834 Tau, π^1 UMa, and GJ 503.2 as members of the Ursa Major group. A clear rotation-activity dependence has been found in these stars.EDP ScienciesUniversidad Complutense de Madrid20012001-12-0120012001-12-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/59680reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/596802026-06-02T12:44:21Z
dc.title.none.fl_str_mv Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
title Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
spellingShingle Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
Montes Gutiérrez, David
52
Solar-type stars
Main-sequence stars
Ursa-major group
Multiwavelength optical observations
Stellar kinematic groups
Rotation-activity connection
Extreme-ultraviolet sources
Wide-field camera
All-sky survey
Low-mass stars
Astrofísica
Astronomía (Física)
title_short Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
title_full Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
title_fullStr Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
title_full_unstemmed Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
title_sort Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
dc.creator.none.fl_str_mv Montes Gutiérrez, David
López Santiago, Javier
Fernández Figueroa, María José
Galves, M. C.
author Montes Gutiérrez, David
author_facet Montes Gutiérrez, David
López Santiago, Javier
Fernández Figueroa, María José
Galves, M. C.
author_role author
author2 López Santiago, Javier
Fernández Figueroa, María José
Galves, M. C.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
Solar-type stars
Main-sequence stars
Ursa-major group
Multiwavelength optical observations
Stellar kinematic groups
Rotation-activity connection
Extreme-ultraviolet sources
Wide-field camera
All-sky survey
Low-mass stars
Astrofísica
Astronomía (Física)
topic 52
Solar-type stars
Main-sequence stars
Ursa-major group
Multiwavelength optical observations
Stellar kinematic groups
Rotation-activity connection
Extreme-ultraviolet sources
Wide-field camera
All-sky survey
Low-mass stars
Astrofísica
Astronomía (Física)
description We present here high resolution echelle spectra taken during three observing runs of 14 single late-type stars identified in our previous studies (Montes et al. 2001b, hereafter Paper I) as possible members of different young stellar kinematic groups (Local Association (20-150 Myr), Ursa Major group (300 Myr), Hyades supercluster (600 Myr), and IC 2391 supercluster (35 Myr)). Radial velocities have been determined by cross correlation with radial velocity standard stars and used together with precise measurements of proper motions and parallaxes taken from Hipparcos and Tycho-2 Catalogues, to calculate Galactic space motions (U, V, W) and to apply Eggen's kinematic criteria. The chromospheric activity level of these stars have been analysed using the information provided for several optical spectroscopic features (from the CaII H & K toCaII IRT lines) that are formed at different heights in the chromosphere. The Li I λ6707.8 Å line equivalent width (EW) has been determined and compared in the EW(Li I) versus spectral type diagram with the EW(Li I) of stars members of well-known young open clusters of different ages, in order to obtain an age estimation. All these data allow us to analyse in more detail the membership of these stars in the different young stellar kinematic groups. Using both, kinematic and spectroscopic criteria we have confirmed PW And, V368 Cep, V383 Lac, EP Eri, DX Leo, HD 77407, and EK Dra as members of the Local Association and V834 Tau, π^1 UMa, and GJ 503.2 as members of the Ursa Major group. A clear rotation-activity dependence has been found in these stars.
publishDate 2001
dc.date.none.fl_str_mv 2001
2001-12-01
2001
2001-12-01
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/20.500.14352/59680
url https://hdl.handle.net/20.500.14352/59680
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 Sciencies
publisher.none.fl_str_mv EDP Sciencies
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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