An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters

Autores
Asa'd, Randa S.; Hanson, M. M.; Ahumada, Andrea Veronica
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The utility of stellar cluster aging methods based on integrated spectra is clearly demonstrated by its extensive use by researchers for decades. However, few studies have determined the accuracy of such methods using a significant sample of age-calibrated stellar clusters with recent models. We have amassed a sample of 27 stellar clusters, 20 with new spectra we obtained with the SOAR and Blanco 4-m Telescopes, with previously determined ages using color-magnitude diagrams (CMDs). We compared the CMD ages to ages obtained from the clusters’ integrated spectra. We find that the integrated spectra in the wavelength range 3626–6230 Å, when compared with high resolution computational models, provide very good age predictions. In particular, the spectral method is more robust in resolving the age-extinction degeneracy that plagues broad-band photometric aging methods. We observe no significant difference in the ability of the synthetic spectra to fit and properly age stellar clusters based on the intrinsic mass of the stellar clusters in our sample.
Fil: Asa'd, Randa S.. American University of Sharjah; Emiratos Arabes Unidos. University Of Cincinnati; Estados Unidos
Fil: Hanson, M. M.. University Of Cincinnati; Estados Unidos
Fil: Ahumada, Andrea Veronica. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Stellar Clusters
Magellanic Clouds
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:11336/24143

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network_name_str CONICET Digital (CONICET)
spelling An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar ClustersAsa'd, Randa S.Hanson, M. M.Ahumada, Andrea VeronicaStellar ClustersMagellanic Cloudshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The utility of stellar cluster aging methods based on integrated spectra is clearly demonstrated by its extensive use by researchers for decades. However, few studies have determined the accuracy of such methods using a significant sample of age-calibrated stellar clusters with recent models. We have amassed a sample of 27 stellar clusters, 20 with new spectra we obtained with the SOAR and Blanco 4-m Telescopes, with previously determined ages using color-magnitude diagrams (CMDs). We compared the CMD ages to ages obtained from the clusters’ integrated spectra. We find that the integrated spectra in the wavelength range 3626–6230 Å, when compared with high resolution computational models, provide very good age predictions. In particular, the spectral method is more robust in resolving the age-extinction degeneracy that plagues broad-band photometric aging methods. We observe no significant difference in the ability of the synthetic spectra to fit and properly age stellar clusters based on the intrinsic mass of the stellar clusters in our sample.Fil: Asa'd, Randa S.. American University of Sharjah; Emiratos Arabes Unidos. University Of Cincinnati; Estados UnidosFil: Hanson, M. M.. University Of Cincinnati; Estados UnidosFil: Ahumada, Andrea Veronica. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaIOP Publishing2013-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/24143Asa'd, Randa S.; Hanson, M. M.; Ahumada, Andrea Veronica; An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters ; IOP Publishing; Publications of the Astronomical Society of the Pacific; 125; 933; 11-2013; 1304-13140004-6280CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1086/674079info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1086/674079info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:35:43Zoai:ri.conicet.gov.ar:11336/24143instacron: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 10:35:43.849CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters
title An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters
spellingShingle An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters
Asa'd, Randa S.
Stellar Clusters
Magellanic Clouds
title_short An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters
title_full An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters
title_fullStr An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters
title_full_unstemmed An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters
title_sort An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters
dc.creator.none.fl_str_mv Asa'd, Randa S.
Hanson, M. M.
Ahumada, Andrea Veronica
author Asa'd, Randa S.
author_facet Asa'd, Randa S.
Hanson, M. M.
Ahumada, Andrea Veronica
author_role author
author2 Hanson, M. M.
Ahumada, Andrea Veronica
author2_role author
author
dc.subject.none.fl_str_mv Stellar Clusters
Magellanic Clouds
topic Stellar Clusters
Magellanic Clouds
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 utility of stellar cluster aging methods based on integrated spectra is clearly demonstrated by its extensive use by researchers for decades. However, few studies have determined the accuracy of such methods using a significant sample of age-calibrated stellar clusters with recent models. We have amassed a sample of 27 stellar clusters, 20 with new spectra we obtained with the SOAR and Blanco 4-m Telescopes, with previously determined ages using color-magnitude diagrams (CMDs). We compared the CMD ages to ages obtained from the clusters’ integrated spectra. We find that the integrated spectra in the wavelength range 3626–6230 Å, when compared with high resolution computational models, provide very good age predictions. In particular, the spectral method is more robust in resolving the age-extinction degeneracy that plagues broad-band photometric aging methods. We observe no significant difference in the ability of the synthetic spectra to fit and properly age stellar clusters based on the intrinsic mass of the stellar clusters in our sample.
Fil: Asa'd, Randa S.. American University of Sharjah; Emiratos Arabes Unidos. University Of Cincinnati; Estados Unidos
Fil: Hanson, M. M.. University Of Cincinnati; Estados Unidos
Fil: Ahumada, Andrea Veronica. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The utility of stellar cluster aging methods based on integrated spectra is clearly demonstrated by its extensive use by researchers for decades. However, few studies have determined the accuracy of such methods using a significant sample of age-calibrated stellar clusters with recent models. We have amassed a sample of 27 stellar clusters, 20 with new spectra we obtained with the SOAR and Blanco 4-m Telescopes, with previously determined ages using color-magnitude diagrams (CMDs). We compared the CMD ages to ages obtained from the clusters’ integrated spectra. We find that the integrated spectra in the wavelength range 3626–6230 Å, when compared with high resolution computational models, provide very good age predictions. In particular, the spectral method is more robust in resolving the age-extinction degeneracy that plagues broad-band photometric aging methods. We observe no significant difference in the ability of the synthetic spectra to fit and properly age stellar clusters based on the intrinsic mass of the stellar clusters in our sample.
publishDate 2013
dc.date.none.fl_str_mv 2013-11
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/11336/24143
Asa'd, Randa S.; Hanson, M. M.; Ahumada, Andrea Veronica; An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters ; IOP Publishing; Publications of the Astronomical Society of the Pacific; 125; 933; 11-2013; 1304-1314
0004-6280
CONICET Digital
CONICET
url http://hdl.handle.net/11336/24143
identifier_str_mv Asa'd, Randa S.; Hanson, M. M.; Ahumada, Andrea Veronica; An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters ; IOP Publishing; Publications of the Astronomical Society of the Pacific; 125; 933; 11-2013; 1304-1314
0004-6280
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1086/674079
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1086/674079
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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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