Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/237103 |
Resumo: | In modern models and simulations of galactic evolution, the star formation in massive galaxies is regulated by an ad hoc active galactic nuclei (AGN) feedback process. However, the physics and the extension of such effects on the star formation history of galaxies is matter of vivid debate. In order to shed some light in the AGN effects over the star formation, we analysed the inner 500 × 500 pc of a sample of 14 Seyfert galaxies using GMOS and MUSE integral field spectroscopy. We fitted the continuum spectra in order to derive stellar age, metallicity, velocity, and velocity dispersion maps in each source. After stacking our sample and averaging their properties, we found that the contribution of young SP, as well as that of AGN featureless continuum both peak at the nucleus. The fraction of intermediate-age SPs is smaller in the nucleus if compared to outer regions, and the contribution of old SPs vary very little within our field of view (FoV). We also found no variation of velocity dispersion or metallicity within our FoV. Lastly, we detected an increase in the dust reddening towards the center of the galaxies. These results lead us to conclude that AGN phenomenon is usually related to a recent star formation episode in the circumnuclear region. |
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Hahn, Luis Gabriel DahmerRiffel, RogérioRodriguez-Ardila, AlbertoRiffel, Rogemar AndréStorchi-Bergmann, ThaisaOliveira, Murilo Marinello Assis deDavies, Richard I.Burtscher, LeonardDutra, Daniel RuschelRosario, David2022-04-13T04:50:56Z20220035-8711http://hdl.handle.net/10183/237103001138124In modern models and simulations of galactic evolution, the star formation in massive galaxies is regulated by an ad hoc active galactic nuclei (AGN) feedback process. However, the physics and the extension of such effects on the star formation history of galaxies is matter of vivid debate. In order to shed some light in the AGN effects over the star formation, we analysed the inner 500 × 500 pc of a sample of 14 Seyfert galaxies using GMOS and MUSE integral field spectroscopy. We fitted the continuum spectra in order to derive stellar age, metallicity, velocity, and velocity dispersion maps in each source. After stacking our sample and averaging their properties, we found that the contribution of young SP, as well as that of AGN featureless continuum both peak at the nucleus. The fraction of intermediate-age SPs is smaller in the nucleus if compared to outer regions, and the contribution of old SPs vary very little within our field of view (FoV). We also found no variation of velocity dispersion or metallicity within our FoV. Lastly, we detected an increase in the dust reddening towards the center of the galaxies. These results lead us to conclude that AGN phenomenon is usually related to a recent star formation episode in the circumnuclear region.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 509, no. 3 (Jan. 2022), p. 4653–4668EspectroscopiaGalaxias seyfertFormacao de estrelasNucleo galaticoTechniques: imaging spectroscopyGalaxies: SeyfertGalaxies: star formationGalaxies: nucleiStellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pcEstrangeiroinfo: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:UFRGSTEXT001138124.pdf.txt001138124.pdf.txtExtracted Texttext/plain66738http://www.lume.ufrgs.br/bitstream/10183/237103/2/001138124.pdf.txt5d1b794187988cfcadc8aa8d9ae72563MD52ORIGINAL001138124.pdfTexto completo (inglês)application/pdf4595422http://www.lume.ufrgs.br/bitstream/10183/237103/1/001138124.pdf7ef4bd7d1e444c18e908dff3bda4877eMD5110183/2371032023-09-24 03:37:50.999826oai:www.lume.ufrgs.br:10183/237103Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-24T06:37:50Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc |
title |
Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc |
spellingShingle |
Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc Hahn, Luis Gabriel Dahmer Espectroscopia Galaxias seyfert Formacao de estrelas Nucleo galatico Techniques: imaging spectroscopy Galaxies: Seyfert Galaxies: star formation Galaxies: nuclei |
title_short |
Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc |
title_full |
Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc |
title_fullStr |
Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc |
title_full_unstemmed |
Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc |
title_sort |
Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc |
author |
Hahn, Luis Gabriel Dahmer |
author_facet |
Hahn, Luis Gabriel Dahmer Riffel, Rogério Rodriguez-Ardila, Alberto Riffel, Rogemar André Storchi-Bergmann, Thaisa Oliveira, Murilo Marinello Assis de Davies, Richard I. Burtscher, Leonard Dutra, Daniel Ruschel Rosario, David |
author_role |
author |
author2 |
Riffel, Rogério Rodriguez-Ardila, Alberto Riffel, Rogemar André Storchi-Bergmann, Thaisa Oliveira, Murilo Marinello Assis de Davies, Richard I. Burtscher, Leonard Dutra, Daniel Ruschel Rosario, David |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Hahn, Luis Gabriel Dahmer Riffel, Rogério Rodriguez-Ardila, Alberto Riffel, Rogemar André Storchi-Bergmann, Thaisa Oliveira, Murilo Marinello Assis de Davies, Richard I. Burtscher, Leonard Dutra, Daniel Ruschel Rosario, David |
dc.subject.por.fl_str_mv |
Espectroscopia Galaxias seyfert Formacao de estrelas Nucleo galatico |
topic |
Espectroscopia Galaxias seyfert Formacao de estrelas Nucleo galatico Techniques: imaging spectroscopy Galaxies: Seyfert Galaxies: star formation Galaxies: nuclei |
dc.subject.eng.fl_str_mv |
Techniques: imaging spectroscopy Galaxies: Seyfert Galaxies: star formation Galaxies: nuclei |
description |
In modern models and simulations of galactic evolution, the star formation in massive galaxies is regulated by an ad hoc active galactic nuclei (AGN) feedback process. However, the physics and the extension of such effects on the star formation history of galaxies is matter of vivid debate. In order to shed some light in the AGN effects over the star formation, we analysed the inner 500 × 500 pc of a sample of 14 Seyfert galaxies using GMOS and MUSE integral field spectroscopy. We fitted the continuum spectra in order to derive stellar age, metallicity, velocity, and velocity dispersion maps in each source. After stacking our sample and averaging their properties, we found that the contribution of young SP, as well as that of AGN featureless continuum both peak at the nucleus. The fraction of intermediate-age SPs is smaller in the nucleus if compared to outer regions, and the contribution of old SPs vary very little within our field of view (FoV). We also found no variation of velocity dispersion or metallicity within our FoV. Lastly, we detected an increase in the dust reddening towards the center of the galaxies. These results lead us to conclude that AGN phenomenon is usually related to a recent star formation episode in the circumnuclear region. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-04-13T04:50:56Z |
dc.date.issued.fl_str_mv |
2022 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/237103 |
dc.identifier.issn.pt_BR.fl_str_mv |
0035-8711 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001138124 |
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0035-8711 001138124 |
url |
http://hdl.handle.net/10183/237103 |
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. 509, no. 3 (Jan. 2022), p. 4653–4668 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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