Probing evolutionary population synthesis models in the near infrared with early-type galaxies
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/182129 |
Resumo: | We performed a near-infrared (NIR; ∼1.0 –2.4 μm) stellar population study in a sample of early-type galaxies. The synthesis was performed using five different evolutionary population synthesis libraries of models. Our main results can be summarized as follows: low-spectral-resolution libraries are not able to produce reliable results when applied to the NIR alone, with each library finding a different dominant population. The two newest higher resolution models, on the other hand, perform considerably better, finding consistent results to each other and to literature values. We also found that optical results are consistent with each other even for lower resolution models. We also compared optical and NIR results and found out that lower resolution models tend to disagree in the optical and in the NIR, with higher fraction of young populations in the NIR and dust extinction ∼1 mag higher than optical values. For higher resolution models, optical and NIR results tend to agree much better, suggesting that a higher spectral resolution is fundamental to improve the quality of the results. |
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Hahn, Luis Gabriel DahmerRiffel, RogérioRodriguez-Ardila, AlbertoMartins, Lucimara PiresKehrig, CarolinaHeckman, Timothy M.Pastoriza, Miriani GriseldaDametto, Natacha Zanon2018-09-18T02:30:16Z20180035-8711http://hdl.handle.net/10183/182129001073080We performed a near-infrared (NIR; ∼1.0 –2.4 μm) stellar population study in a sample of early-type galaxies. The synthesis was performed using five different evolutionary population synthesis libraries of models. Our main results can be summarized as follows: low-spectral-resolution libraries are not able to produce reliable results when applied to the NIR alone, with each library finding a different dominant population. The two newest higher resolution models, on the other hand, perform considerably better, finding consistent results to each other and to literature values. We also found that optical results are consistent with each other even for lower resolution models. We also compared optical and NIR results and found out that lower resolution models tend to disagree in the optical and in the NIR, with higher fraction of young populations in the NIR and dust extinction ∼1 mag higher than optical values. For higher resolution models, optical and NIR results tend to agree much better, suggesting that a higher spectral resolution is fundamental to improve the quality of the results.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 476, no. 4 (June 2018), p. 4459–4480GaláxiasPopulacoes estelaresEvolucao estelarEspectroscopia infravermelhaStars: AGB and post-AGBGalaxies: stellar contentInfrared: galaxiesProbing evolutionary population synthesis models in the near infrared with early-type galaxiesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001073080.pdfTexto completo (inglês)application/pdf4332494http://www.lume.ufrgs.br/bitstream/10183/182129/1/001073080.pdf5c30c8fe4195ffd49b6b4241e9f79105MD51TEXT001073080.pdf.txt001073080.pdf.txtExtracted Texttext/plain66237http://www.lume.ufrgs.br/bitstream/10183/182129/2/001073080.pdf.txt83d9dc4bbcb917c065ed5557229f5d8cMD52THUMBNAIL001073080.pdf.jpg001073080.pdf.jpgGenerated Thumbnailimage/jpeg2132http://www.lume.ufrgs.br/bitstream/10183/182129/3/001073080.pdf.jpg6440e20bad4d12e128db6898cbf56dc4MD5310183/1821292023-10-08 03:33:41.821377oai:www.lume.ufrgs.br:10183/182129Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-10-08T06:33:41Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Probing evolutionary population synthesis models in the near infrared with early-type galaxies |
title |
Probing evolutionary population synthesis models in the near infrared with early-type galaxies |
spellingShingle |
Probing evolutionary population synthesis models in the near infrared with early-type galaxies Hahn, Luis Gabriel Dahmer Galáxias Populacoes estelares Evolucao estelar Espectroscopia infravermelha Stars: AGB and post-AGB Galaxies: stellar content Infrared: galaxies |
title_short |
Probing evolutionary population synthesis models in the near infrared with early-type galaxies |
title_full |
Probing evolutionary population synthesis models in the near infrared with early-type galaxies |
title_fullStr |
Probing evolutionary population synthesis models in the near infrared with early-type galaxies |
title_full_unstemmed |
Probing evolutionary population synthesis models in the near infrared with early-type galaxies |
title_sort |
Probing evolutionary population synthesis models in the near infrared with early-type galaxies |
author |
Hahn, Luis Gabriel Dahmer |
author_facet |
Hahn, Luis Gabriel Dahmer Riffel, Rogério Rodriguez-Ardila, Alberto Martins, Lucimara Pires Kehrig, Carolina Heckman, Timothy M. Pastoriza, Miriani Griselda Dametto, Natacha Zanon |
author_role |
author |
author2 |
Riffel, Rogério Rodriguez-Ardila, Alberto Martins, Lucimara Pires Kehrig, Carolina Heckman, Timothy M. Pastoriza, Miriani Griselda Dametto, Natacha Zanon |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Hahn, Luis Gabriel Dahmer Riffel, Rogério Rodriguez-Ardila, Alberto Martins, Lucimara Pires Kehrig, Carolina Heckman, Timothy M. Pastoriza, Miriani Griselda Dametto, Natacha Zanon |
dc.subject.por.fl_str_mv |
Galáxias Populacoes estelares Evolucao estelar Espectroscopia infravermelha |
topic |
Galáxias Populacoes estelares Evolucao estelar Espectroscopia infravermelha Stars: AGB and post-AGB Galaxies: stellar content Infrared: galaxies |
dc.subject.eng.fl_str_mv |
Stars: AGB and post-AGB Galaxies: stellar content Infrared: galaxies |
description |
We performed a near-infrared (NIR; ∼1.0 –2.4 μm) stellar population study in a sample of early-type galaxies. The synthesis was performed using five different evolutionary population synthesis libraries of models. Our main results can be summarized as follows: low-spectral-resolution libraries are not able to produce reliable results when applied to the NIR alone, with each library finding a different dominant population. The two newest higher resolution models, on the other hand, perform considerably better, finding consistent results to each other and to literature values. We also found that optical results are consistent with each other even for lower resolution models. We also compared optical and NIR results and found out that lower resolution models tend to disagree in the optical and in the NIR, with higher fraction of young populations in the NIR and dust extinction ∼1 mag higher than optical values. For higher resolution models, optical and NIR results tend to agree much better, suggesting that a higher spectral resolution is fundamental to improve the quality of the results. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-09-18T02:30:16Z |
dc.date.issued.fl_str_mv |
2018 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
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info:eu-repo/semantics/publishedVersion |
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http://hdl.handle.net/10183/182129 |
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0035-8711 |
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001073080 |
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http://hdl.handle.net/10183/182129 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Monthly notices of the royal astronomical society. Oxford. Vol. 476, no. 4 (June 2018), p. 4459–4480 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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