Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation

Detalhes bibliográficos
Autor(a) principal: Riffel, Rogemar André
Data de Publicação: 2021
Outros Autores: Bianchin, Marina, Riffel, Rogério, Storchi-Bergmann, Thaisa, Schönell Júnior, Astor João, Hahn, Luis Gabriel Dahmer, Dametto, Natacha Zanon, Diniz, Marlon Rodrigo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/235103
Resumo: The near-infrared spectra of active galactic nuclei (AGN) present emission lines of different atomic and molecular species. The mechanisms involved in the origin of these emission lines in AGN are still not fully understood. We use J- and K-band integral field spectra of six luminous (43.1 < logLbol/(erg s−1) < 44.4) Seyfert galaxies (NGC 788, Mrk 607, NGC 3227, NGC 3516, NGC 5506, and NGC 5899) in the local Universe (0.0039 <z< 0.0136) to investigate the gas excitation within the inner 100–300 pc radius of the galaxies at spatial resolutions of a few tens of parsecs. In all galaxies, the H2 emission originates from thermal processes with excitation temperatures in the range 2400–5200 K. In the high-line ratio (HLR) region of the H2/Brγ versus [Fe II]/Paβ diagnostic diagram, which includes 29 per cent of the spaxels, shocks are the main excitation mechanism, as indicated by the correlation between the line widths and line ratios. In the AGN region of the diagram (64 per cent of the spaxels) the H2 emission is due to the AGN radiation. The [Fe II] emission is produced by a combination of photoionization by the AGN radiation and shocks in five galaxies and is dominated by photoionization in NGC 788. The [S IX]1.2523 μm coronal emission line is present in all galaxies, and its flux distributions are extended from 80 to 185 pc from the galaxy nuclei, except for NGC 5899, in which this line is detected only in the integrated spectrum.
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spelling Riffel, Rogemar AndréBianchin, MarinaRiffel, RogérioStorchi-Bergmann, ThaisaSchönell Júnior, Astor JoãoHahn, Luis Gabriel DahmerDametto, Natacha ZanonDiniz, Marlon Rodrigo2022-02-12T04:53:16Z20210035-8711http://hdl.handle.net/10183/235103001129609The near-infrared spectra of active galactic nuclei (AGN) present emission lines of different atomic and molecular species. The mechanisms involved in the origin of these emission lines in AGN are still not fully understood. We use J- and K-band integral field spectra of six luminous (43.1 < logLbol/(erg s−1) < 44.4) Seyfert galaxies (NGC 788, Mrk 607, NGC 3227, NGC 3516, NGC 5506, and NGC 5899) in the local Universe (0.0039 <z< 0.0136) to investigate the gas excitation within the inner 100–300 pc radius of the galaxies at spatial resolutions of a few tens of parsecs. In all galaxies, the H2 emission originates from thermal processes with excitation temperatures in the range 2400–5200 K. In the high-line ratio (HLR) region of the H2/Brγ versus [Fe II]/Paβ diagnostic diagram, which includes 29 per cent of the spaxels, shocks are the main excitation mechanism, as indicated by the correlation between the line widths and line ratios. In the AGN region of the diagram (64 per cent of the spaxels) the H2 emission is due to the AGN radiation. The [Fe II] emission is produced by a combination of photoionization by the AGN radiation and shocks in five galaxies and is dominated by photoionization in NGC 788. The [S IX]1.2523 μm coronal emission line is present in all galaxies, and its flux distributions are extended from 80 to 185 pc from the galaxy nuclei, except for NGC 5899, in which this line is detected only in the integrated spectrum.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 503, no. 4 (June 2021), p. 5161-5178Galáxias ativasNucleo galaticoGalaxias seyfertGalaxies: ActiveGalaxies: ISMGalaxies: NucleiGalaxies: SeyfertGemini NIFS survey of feeding and feedback in nearby active galaxies : IV. ExcitationEstrangeiroinfo: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:UFRGSTEXT001129609.pdf.txt001129609.pdf.txtExtracted Texttext/plain84337http://www.lume.ufrgs.br/bitstream/10183/235103/2/001129609.pdf.txtd04382054c19ab57cee3ef6d78417efcMD52ORIGINAL001129609.pdfTexto completo (inglês)application/pdf8741963http://www.lume.ufrgs.br/bitstream/10183/235103/1/001129609.pdfd04e425c36bef53c805f40905b0b8130MD5110183/2351032023-09-24 03:39:34.900971oai:www.lume.ufrgs.br:10183/235103Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-24T06:39:34Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation
title Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation
spellingShingle Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation
Riffel, Rogemar André
Galáxias ativas
Nucleo galatico
Galaxias seyfert
Galaxies: Active
Galaxies: ISM
Galaxies: Nuclei
Galaxies: Seyfert
title_short Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation
title_full Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation
title_fullStr Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation
title_full_unstemmed Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation
title_sort Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation
author Riffel, Rogemar André
author_facet Riffel, Rogemar André
Bianchin, Marina
Riffel, Rogério
Storchi-Bergmann, Thaisa
Schönell Júnior, Astor João
Hahn, Luis Gabriel Dahmer
Dametto, Natacha Zanon
Diniz, Marlon Rodrigo
author_role author
author2 Bianchin, Marina
Riffel, Rogério
Storchi-Bergmann, Thaisa
Schönell Júnior, Astor João
Hahn, Luis Gabriel Dahmer
Dametto, Natacha Zanon
Diniz, Marlon Rodrigo
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Riffel, Rogemar André
Bianchin, Marina
Riffel, Rogério
Storchi-Bergmann, Thaisa
Schönell Júnior, Astor João
Hahn, Luis Gabriel Dahmer
Dametto, Natacha Zanon
Diniz, Marlon Rodrigo
dc.subject.por.fl_str_mv Galáxias ativas
Nucleo galatico
Galaxias seyfert
topic Galáxias ativas
Nucleo galatico
Galaxias seyfert
Galaxies: Active
Galaxies: ISM
Galaxies: Nuclei
Galaxies: Seyfert
dc.subject.eng.fl_str_mv Galaxies: Active
Galaxies: ISM
Galaxies: Nuclei
Galaxies: Seyfert
description The near-infrared spectra of active galactic nuclei (AGN) present emission lines of different atomic and molecular species. The mechanisms involved in the origin of these emission lines in AGN are still not fully understood. We use J- and K-band integral field spectra of six luminous (43.1 < logLbol/(erg s−1) < 44.4) Seyfert galaxies (NGC 788, Mrk 607, NGC 3227, NGC 3516, NGC 5506, and NGC 5899) in the local Universe (0.0039 <z< 0.0136) to investigate the gas excitation within the inner 100–300 pc radius of the galaxies at spatial resolutions of a few tens of parsecs. In all galaxies, the H2 emission originates from thermal processes with excitation temperatures in the range 2400–5200 K. In the high-line ratio (HLR) region of the H2/Brγ versus [Fe II]/Paβ diagnostic diagram, which includes 29 per cent of the spaxels, shocks are the main excitation mechanism, as indicated by the correlation between the line widths and line ratios. In the AGN region of the diagram (64 per cent of the spaxels) the H2 emission is due to the AGN radiation. The [Fe II] emission is produced by a combination of photoionization by the AGN radiation and shocks in five galaxies and is dominated by photoionization in NGC 788. The [S IX]1.2523 μm coronal emission line is present in all galaxies, and its flux distributions are extended from 80 to 185 pc from the galaxy nuclei, except for NGC 5899, in which this line is detected only in the integrated spectrum.
publishDate 2021
dc.date.issued.fl_str_mv 2021
dc.date.accessioned.fl_str_mv 2022-02-12T04:53:16Z
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dc.identifier.issn.pt_BR.fl_str_mv 0035-8711
dc.identifier.nrb.pt_BR.fl_str_mv 001129609
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Monthly notices of the royal astronomical society. Oxford. Vol. 503, no. 4 (June 2021), p. 5161-5178
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reponame_str Repositório Institucional da UFRGS
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