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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/74075
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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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1844614393769230336 |
score |
13.070432 |