First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA

Autores
Miralles-Caballero, D.; Díaz, A. I.; López-Sánchez, Á. R.; Rosales-Ortega, F. F.; Monreal-Ibero, A.; Pérez-Montero, E.; Kehrig, C.; García-Benito, R.; Sánchez, S. F.; Walcher, C. J.; Galbany, L.; Iglesias-Páramo, J.; Vílchez, J. M.; González Delgado, R. M.; van de Ven, G.; Barrera-Ballesteros, J.; Lyubenova, M.; Meidt, S.; Falcon-Barroso, J.; Mast, Damian; Mendoza, M. A.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The search of extragalactic regions with conspicuous presence of Wolf-Rayet (WR) stars outside the Local Group is challenging task owing to the difficulty in detecting their faint spectral features. In this exploratory work, we develop a methodology to perform an automated search of WR signatures through a pixel-by-pixel analysis of integral field spectroscopy (IFS) data belonging to the Calar Alto Legacy Integral Field Area survey, CALIFA. This procedure has been applied to a sample of nearby galaxies spanning a wide range of physical, morphological, and environmental properties. This technique allowed us to build the first catalogue of regions rich in WR stars with spatially resolved information, and enabled us to study the properties of these complexes in a two-dimensional (2D) context. The detection technique is based on the identification of the blue WR bump (around He iiλ4686 Å, mainly associated with nitrogen-rich WR stars; WN) and the red WR bump (around C ivλ5808 Å, mainly associated with carbon-rich WR stars; WC) using a pixel-by-pixel analysis that maximizes the number of independent regions within a given galaxy. We identified 44 WR-rich regions with blue bumps distributed in 25 out of a total of 558 galaxies. The red WR bump was identified only in 5 of those regions. Most of the WR regions are located within one effective radius from the galaxy centre, and around one-third are located within ~1 kpc or less from the centre. We found that the majority of the galaxies hosting WR populations in our sample are involved in some kind of interaction process. Half of the host galaxies share some properties with gamma-ray burst (GRB) hosts where WR stars, such as potential candidates to the progenitors of GRBs, are found. We also compared the WR properties derived from the CALIFA data with stellar population synthesis models, and confirm that simple star models are generally not able to reproduce the observations. We conclude that other effects, such as binary star channel (which could extend theWR phase up to 10 Myr), fast rotation, or other physical processes that cause the loss of observed Lyman continuum photons, very likely affect the derived WR properties, and hence should be considered when modelling the evolution of massive stars.
Fil: Miralles-Caballero, D.. Universidad Autónoma de Madrid; España
Fil: Díaz, A. I.. Universidad Autónoma de Madrid; España
Fil: López-Sánchez, Á. R.. Sydney Institute For Astronomy; Australia
Fil: Rosales-Ortega, F. F.. Instituto Nacional de Astrofísica, Óptica y Electrónica; México
Fil: Monreal-Ibero, A.. Université Paris Diderot - Paris 7; Francia
Fil: Pérez-Montero, E.. Instituto de Astrofísica de Andalucía; España
Fil: Kehrig, C.. Instituto de Astrofísica de Andalucía; España
Fil: García-Benito, R.. Instituto de Astrofísica de Andalucía; España
Fil: Sánchez, S. F.. Instituto de Astrofísica de Andalucía; España
Fil: Walcher, C. J.. Leibniz-institut Für Astrophysik Potsdam (aip); Alemania
Fil: Galbany, L.. Millennium Institute Of Astrophysics Mas; Chile
Fil: Iglesias-Páramo, J.. Instituto de Astrofísica de Andalucía; España
Fil: Vílchez, J. M.. Instituto de Astrofísica de Andalucía; España
Fil: González Delgado, R. M.. Instituto de Astrofísica de Andalucía; España
Fil: van de Ven, G.. Max Planck Institut Fur Astronomie; Alemania
Fil: Barrera-Ballesteros, J.. Instituto de Astrofísica de Canarias; España
Fil: Lyubenova, M.. Max Planck Institut Fur Astronomie; Alemania
Fil: Meidt, S.. Universidad de Porto; Portugal
Fil: Falcon-Barroso, J.. Instituto de Astrofísica de Canarias; España
Fil: Mast, Damian. Centro Astronómico Hispano Alemán; España. Instituto de Astrofísica de Andalucía; España. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Mendoza, M. A.. Instituto de Astrofísica de Andalucía; España
Materia
GALAXIES: ISM
GALAXIES: STARBURST
STARS: WOLF-RAYET
TECHNIQUES: IMAGING SPECTROSCOPY
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:11336/74075

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network_name_str CONICET Digital (CONICET)
spelling First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFAMiralles-Caballero, D.Díaz, A. I.López-Sánchez, Á. R.Rosales-Ortega, F. F.Monreal-Ibero, A.Pérez-Montero, E.Kehrig, C.García-Benito, R.Sánchez, S. F.Walcher, C. J.Galbany, L.Iglesias-Páramo, J.Vílchez, J. M.González Delgado, R. M.van de Ven, G.Barrera-Ballesteros, J.Lyubenova, M.Meidt, S.Falcon-Barroso, J.Mast, DamianMendoza, M. A.GALAXIES: ISMGALAXIES: STARBURSTSTARS: WOLF-RAYETTECHNIQUES: IMAGING SPECTROSCOPYhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The search of extragalactic regions with conspicuous presence of Wolf-Rayet (WR) stars outside the Local Group is challenging task owing to the difficulty in detecting their faint spectral features. In this exploratory work, we develop a methodology to perform an automated search of WR signatures through a pixel-by-pixel analysis of integral field spectroscopy (IFS) data belonging to the Calar Alto Legacy Integral Field Area survey, CALIFA. This procedure has been applied to a sample of nearby galaxies spanning a wide range of physical, morphological, and environmental properties. This technique allowed us to build the first catalogue of regions rich in WR stars with spatially resolved information, and enabled us to study the properties of these complexes in a two-dimensional (2D) context. The detection technique is based on the identification of the blue WR bump (around He iiλ4686 Å, mainly associated with nitrogen-rich WR stars; WN) and the red WR bump (around C ivλ5808 Å, mainly associated with carbon-rich WR stars; WC) using a pixel-by-pixel analysis that maximizes the number of independent regions within a given galaxy. We identified 44 WR-rich regions with blue bumps distributed in 25 out of a total of 558 galaxies. The red WR bump was identified only in 5 of those regions. Most of the WR regions are located within one effective radius from the galaxy centre, and around one-third are located within ~1 kpc or less from the centre. We found that the majority of the galaxies hosting WR populations in our sample are involved in some kind of interaction process. Half of the host galaxies share some properties with gamma-ray burst (GRB) hosts where WR stars, such as potential candidates to the progenitors of GRBs, are found. We also compared the WR properties derived from the CALIFA data with stellar population synthesis models, and confirm that simple star models are generally not able to reproduce the observations. We conclude that other effects, such as binary star channel (which could extend theWR phase up to 10 Myr), fast rotation, or other physical processes that cause the loss of observed Lyman continuum photons, very likely affect the derived WR properties, and hence should be considered when modelling the evolution of massive stars.Fil: Miralles-Caballero, D.. Universidad Autónoma de Madrid; EspañaFil: Díaz, A. I.. Universidad Autónoma de Madrid; EspañaFil: López-Sánchez, Á. R.. Sydney Institute For Astronomy; AustraliaFil: Rosales-Ortega, F. F.. Instituto Nacional de Astrofísica, Óptica y Electrónica; MéxicoFil: Monreal-Ibero, A.. Université Paris Diderot - Paris 7; FranciaFil: Pérez-Montero, E.. Instituto de Astrofísica de Andalucía; EspañaFil: Kehrig, C.. Instituto de Astrofísica de Andalucía; EspañaFil: García-Benito, R.. Instituto de Astrofísica de Andalucía; EspañaFil: Sánchez, S. F.. Instituto de Astrofísica de Andalucía; EspañaFil: Walcher, C. J.. Leibniz-institut Für Astrophysik Potsdam (aip); AlemaniaFil: Galbany, L.. Millennium Institute Of Astrophysics Mas; ChileFil: Iglesias-Páramo, J.. Instituto de Astrofísica de Andalucía; EspañaFil: Vílchez, J. M.. Instituto de Astrofísica de Andalucía; EspañaFil: González Delgado, R. M.. Instituto de Astrofísica de Andalucía; EspañaFil: van de Ven, G.. Max Planck Institut Fur Astronomie; AlemaniaFil: Barrera-Ballesteros, J.. Instituto de Astrofísica de Canarias; EspañaFil: Lyubenova, M.. Max Planck Institut Fur Astronomie; AlemaniaFil: Meidt, S.. Universidad de Porto; PortugalFil: Falcon-Barroso, J.. Instituto de Astrofísica de Canarias; EspañaFil: Mast, Damian. Centro Astronómico Hispano Alemán; España. Instituto de Astrofísica de Andalucía; España. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Mendoza, M. A.. Instituto de Astrofísica de Andalucía; EspañaEDP Sciences2016-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/74075Miralles-Caballero, D.; Díaz, A. I.; López-Sánchez, Á. R.; Rosales-Ortega, F. F.; Monreal-Ibero, A.; et al.; First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA; EDP Sciences; Astronomy and Astrophysics; 592; 8-20160004-63611432-0746CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/10.1051/0004-6361/201527179info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201527179info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:37:20Zoai:ri.conicet.gov.ar:11336/74075instacron: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 10:37:20.439CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA
title First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA
spellingShingle First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA
Miralles-Caballero, D.
GALAXIES: ISM
GALAXIES: STARBURST
STARS: WOLF-RAYET
TECHNIQUES: IMAGING SPECTROSCOPY
title_short First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA
title_full First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA
title_fullStr First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA
title_full_unstemmed First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA
title_sort First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA
dc.creator.none.fl_str_mv Miralles-Caballero, D.
Díaz, A. I.
López-Sánchez, Á. R.
Rosales-Ortega, F. F.
Monreal-Ibero, A.
Pérez-Montero, E.
Kehrig, C.
García-Benito, R.
Sánchez, S. F.
Walcher, C. J.
Galbany, L.
Iglesias-Páramo, J.
Vílchez, J. M.
González Delgado, R. M.
van de Ven, G.
Barrera-Ballesteros, J.
Lyubenova, M.
Meidt, S.
Falcon-Barroso, J.
Mast, Damian
Mendoza, M. A.
author Miralles-Caballero, D.
author_facet Miralles-Caballero, D.
Díaz, A. I.
López-Sánchez, Á. R.
Rosales-Ortega, F. F.
Monreal-Ibero, A.
Pérez-Montero, E.
Kehrig, C.
García-Benito, R.
Sánchez, S. F.
Walcher, C. J.
Galbany, L.
Iglesias-Páramo, J.
Vílchez, J. M.
González Delgado, R. M.
van de Ven, G.
Barrera-Ballesteros, J.
Lyubenova, M.
Meidt, S.
Falcon-Barroso, J.
Mast, Damian
Mendoza, M. A.
author_role author
author2 Díaz, A. I.
López-Sánchez, Á. R.
Rosales-Ortega, F. F.
Monreal-Ibero, A.
Pérez-Montero, E.
Kehrig, C.
García-Benito, R.
Sánchez, S. F.
Walcher, C. J.
Galbany, L.
Iglesias-Páramo, J.
Vílchez, J. M.
González Delgado, R. M.
van de Ven, G.
Barrera-Ballesteros, J.
Lyubenova, M.
Meidt, S.
Falcon-Barroso, J.
Mast, Damian
Mendoza, M. A.
author2_role 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 GALAXIES: ISM
GALAXIES: STARBURST
STARS: WOLF-RAYET
TECHNIQUES: IMAGING SPECTROSCOPY
topic GALAXIES: ISM
GALAXIES: STARBURST
STARS: WOLF-RAYET
TECHNIQUES: IMAGING SPECTROSCOPY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The search of extragalactic regions with conspicuous presence of Wolf-Rayet (WR) stars outside the Local Group is challenging task owing to the difficulty in detecting their faint spectral features. In this exploratory work, we develop a methodology to perform an automated search of WR signatures through a pixel-by-pixel analysis of integral field spectroscopy (IFS) data belonging to the Calar Alto Legacy Integral Field Area survey, CALIFA. This procedure has been applied to a sample of nearby galaxies spanning a wide range of physical, morphological, and environmental properties. This technique allowed us to build the first catalogue of regions rich in WR stars with spatially resolved information, and enabled us to study the properties of these complexes in a two-dimensional (2D) context. The detection technique is based on the identification of the blue WR bump (around He iiλ4686 Å, mainly associated with nitrogen-rich WR stars; WN) and the red WR bump (around C ivλ5808 Å, mainly associated with carbon-rich WR stars; WC) using a pixel-by-pixel analysis that maximizes the number of independent regions within a given galaxy. We identified 44 WR-rich regions with blue bumps distributed in 25 out of a total of 558 galaxies. The red WR bump was identified only in 5 of those regions. Most of the WR regions are located within one effective radius from the galaxy centre, and around one-third are located within ~1 kpc or less from the centre. We found that the majority of the galaxies hosting WR populations in our sample are involved in some kind of interaction process. Half of the host galaxies share some properties with gamma-ray burst (GRB) hosts where WR stars, such as potential candidates to the progenitors of GRBs, are found. We also compared the WR properties derived from the CALIFA data with stellar population synthesis models, and confirm that simple star models are generally not able to reproduce the observations. We conclude that other effects, such as binary star channel (which could extend theWR phase up to 10 Myr), fast rotation, or other physical processes that cause the loss of observed Lyman continuum photons, very likely affect the derived WR properties, and hence should be considered when modelling the evolution of massive stars.
Fil: Miralles-Caballero, D.. Universidad Autónoma de Madrid; España
Fil: Díaz, A. I.. Universidad Autónoma de Madrid; España
Fil: López-Sánchez, Á. R.. Sydney Institute For Astronomy; Australia
Fil: Rosales-Ortega, F. F.. Instituto Nacional de Astrofísica, Óptica y Electrónica; México
Fil: Monreal-Ibero, A.. Université Paris Diderot - Paris 7; Francia
Fil: Pérez-Montero, E.. Instituto de Astrofísica de Andalucía; España
Fil: Kehrig, C.. Instituto de Astrofísica de Andalucía; España
Fil: García-Benito, R.. Instituto de Astrofísica de Andalucía; España
Fil: Sánchez, S. F.. Instituto de Astrofísica de Andalucía; España
Fil: Walcher, C. J.. Leibniz-institut Für Astrophysik Potsdam (aip); Alemania
Fil: Galbany, L.. Millennium Institute Of Astrophysics Mas; Chile
Fil: Iglesias-Páramo, J.. Instituto de Astrofísica de Andalucía; España
Fil: Vílchez, J. M.. Instituto de Astrofísica de Andalucía; España
Fil: González Delgado, R. M.. Instituto de Astrofísica de Andalucía; España
Fil: van de Ven, G.. Max Planck Institut Fur Astronomie; Alemania
Fil: Barrera-Ballesteros, J.. Instituto de Astrofísica de Canarias; España
Fil: Lyubenova, M.. Max Planck Institut Fur Astronomie; Alemania
Fil: Meidt, S.. Universidad de Porto; Portugal
Fil: Falcon-Barroso, J.. Instituto de Astrofísica de Canarias; España
Fil: Mast, Damian. Centro Astronómico Hispano Alemán; España. Instituto de Astrofísica de Andalucía; España. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Mendoza, M. A.. Instituto de Astrofísica de Andalucía; España
description The search of extragalactic regions with conspicuous presence of Wolf-Rayet (WR) stars outside the Local Group is challenging task owing to the difficulty in detecting their faint spectral features. In this exploratory work, we develop a methodology to perform an automated search of WR signatures through a pixel-by-pixel analysis of integral field spectroscopy (IFS) data belonging to the Calar Alto Legacy Integral Field Area survey, CALIFA. This procedure has been applied to a sample of nearby galaxies spanning a wide range of physical, morphological, and environmental properties. This technique allowed us to build the first catalogue of regions rich in WR stars with spatially resolved information, and enabled us to study the properties of these complexes in a two-dimensional (2D) context. The detection technique is based on the identification of the blue WR bump (around He iiλ4686 Å, mainly associated with nitrogen-rich WR stars; WN) and the red WR bump (around C ivλ5808 Å, mainly associated with carbon-rich WR stars; WC) using a pixel-by-pixel analysis that maximizes the number of independent regions within a given galaxy. We identified 44 WR-rich regions with blue bumps distributed in 25 out of a total of 558 galaxies. The red WR bump was identified only in 5 of those regions. Most of the WR regions are located within one effective radius from the galaxy centre, and around one-third are located within ~1 kpc or less from the centre. We found that the majority of the galaxies hosting WR populations in our sample are involved in some kind of interaction process. Half of the host galaxies share some properties with gamma-ray burst (GRB) hosts where WR stars, such as potential candidates to the progenitors of GRBs, are found. We also compared the WR properties derived from the CALIFA data with stellar population synthesis models, and confirm that simple star models are generally not able to reproduce the observations. We conclude that other effects, such as binary star channel (which could extend theWR phase up to 10 Myr), fast rotation, or other physical processes that cause the loss of observed Lyman continuum photons, very likely affect the derived WR properties, and hence should be considered when modelling the evolution of massive stars.
publishDate 2016
dc.date.none.fl_str_mv 2016-08
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/11336/74075
Miralles-Caballero, D.; Díaz, A. I.; López-Sánchez, Á. R.; Rosales-Ortega, F. F.; Monreal-Ibero, A.; et al.; First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA; EDP Sciences; Astronomy and Astrophysics; 592; 8-2016
0004-6361
1432-0746
CONICET Digital
CONICET
url http://hdl.handle.net/11336/74075
identifier_str_mv Miralles-Caballero, D.; Díaz, A. I.; López-Sánchez, Á. R.; Rosales-Ortega, F. F.; Monreal-Ibero, A.; et al.; First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA; EDP Sciences; Astronomy and Astrophysics; 592; 8-2016
0004-6361
1432-0746
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/10.1051/0004-6361/201527179
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201527179
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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