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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/24143
Ver los metadatos del registro completo
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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 |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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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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1844614376478212096 |
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13.070432 |