Ionized outflows in local luminous AGN : what are the real densities and outflow rates?

Detalhes bibliográficos
Autor(a) principal: Davies, Richard I.
Data de Publicação: 2020
Outros Autores: Baron, Dalya, Shimizu, Taro, Netzer, Hagai, Burtscher, Leonard, De Zeeuw, P. Tim, Genzel, Reinhard, Hicks, Erin K. S., Koss, Michael, Lin, Ming-Yi, Lutz, Dieter, Maciejewski, Witold B., Muller-Sanchez, Francisco, Orban de Xivry, Gilles, Ricci, Claudio, Riffel, Rogério, Riffel, Rogemar André, Rosario, David, Schartmann, Marc, Müller, Allan Schnorr, Shangguan, J., Sternberg, Amiel, Sturm, Eckhard, Storchi-Bergmann, Thaisa, Tacconi, Linda J., Veilleux, Sylvain
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/217827
Resumo: We report on the determination of electron densities, and their impact on the outflow masses and rates, measured in the central few hundred parsecs of 11 local luminous active galaxies. We show that the peak of the integrated line emission in the active galactic nuclei (AGN) is significantly offset from the systemic velocity as traced by the stellar absorption features, indicating that the profiles are dominated by outflow. In contrast, matched inactive galaxies are characterized by a systemic peak and weaker outflow wing. We present three independent estimates of the electron density in these AGN, discussing the merits of the different methods. The electron density derived from the [S II] doublet is significantly lower than that found with a method developed in the last decade using auroral and transauroral lines, as well as a recently introduced method based on the ionization parameter. The reason is that, for gas photoionized by an AGN, much of the [S II] emission arises in an extended partially ionized zone where the implicit assumption that the electron density traces the hydrogen density is invalid. We propose ways to deal with this situation and we derive the associated outflow rates for ionized gas, which are in the range 0.001–0.5 M yr−1 for our AGN sample. We compare these outflow rates to the relation between M˙ out and LAGN in the literature, and argue that it may need to be modified and rescaled towards lower mass outflow rates.
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spelling Davies, Richard I.Baron, DalyaShimizu, TaroNetzer, HagaiBurtscher, LeonardDe Zeeuw, P. TimGenzel, ReinhardHicks, Erin K. S.Koss, MichaelLin, Ming-YiLutz, DieterMaciejewski, Witold B.Muller-Sanchez, FranciscoOrban de Xivry, GillesRicci, ClaudioRiffel, RogérioRiffel, Rogemar AndréRosario, DavidSchartmann, MarcMüller, Allan SchnorrShangguan, J.Sternberg, AmielSturm, EckhardStorchi-Bergmann, ThaisaTacconi, Linda J.Veilleux, Sylvain2021-02-09T04:07:46Z20200035-8711http://hdl.handle.net/10183/217827001120561We report on the determination of electron densities, and their impact on the outflow masses and rates, measured in the central few hundred parsecs of 11 local luminous active galaxies. We show that the peak of the integrated line emission in the active galactic nuclei (AGN) is significantly offset from the systemic velocity as traced by the stellar absorption features, indicating that the profiles are dominated by outflow. In contrast, matched inactive galaxies are characterized by a systemic peak and weaker outflow wing. We present three independent estimates of the electron density in these AGN, discussing the merits of the different methods. The electron density derived from the [S II] doublet is significantly lower than that found with a method developed in the last decade using auroral and transauroral lines, as well as a recently introduced method based on the ionization parameter. The reason is that, for gas photoionized by an AGN, much of the [S II] emission arises in an extended partially ionized zone where the implicit assumption that the electron density traces the hydrogen density is invalid. We propose ways to deal with this situation and we derive the associated outflow rates for ionized gas, which are in the range 0.001–0.5 M yr−1 for our AGN sample. We compare these outflow rates to the relation between M˙ out and LAGN in the literature, and argue that it may need to be modified and rescaled towards lower mass outflow rates.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 498, no. 3 (Nov. 2020), p. 4150–4177Galáxias ativasMeio interestelarNucleo galaticoGalaxias seyfertGalaxies: activeGalaxies: ISMGalaxies: nucleiGalaxies: SeyfertIonized outflows in local luminous AGN : what are the real densities and outflow rates?Estrangeiroinfo: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:UFRGSTEXT001120561.pdf.txt001120561.pdf.txtExtracted Texttext/plain126839http://www.lume.ufrgs.br/bitstream/10183/217827/2/001120561.pdf.txtcfcb93281d63f0ea7ac1e5e45fd5d78aMD52ORIGINAL001120561.pdfTexto completo (inglês)application/pdf3168202http://www.lume.ufrgs.br/bitstream/10183/217827/1/001120561.pdf33e66a63c497f2e2eedd333500d31eefMD5110183/2178272023-07-20 03:35:54.283628oai:www.lume.ufrgs.br:10183/217827Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-20T06:35:54Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Ionized outflows in local luminous AGN : what are the real densities and outflow rates?
title Ionized outflows in local luminous AGN : what are the real densities and outflow rates?
spellingShingle Ionized outflows in local luminous AGN : what are the real densities and outflow rates?
Davies, Richard I.
Galáxias ativas
Meio interestelar
Nucleo galatico
Galaxias seyfert
Galaxies: active
Galaxies: ISM
Galaxies: nuclei
Galaxies: Seyfert
title_short Ionized outflows in local luminous AGN : what are the real densities and outflow rates?
title_full Ionized outflows in local luminous AGN : what are the real densities and outflow rates?
title_fullStr Ionized outflows in local luminous AGN : what are the real densities and outflow rates?
title_full_unstemmed Ionized outflows in local luminous AGN : what are the real densities and outflow rates?
title_sort Ionized outflows in local luminous AGN : what are the real densities and outflow rates?
author Davies, Richard I.
author_facet Davies, Richard I.
Baron, Dalya
Shimizu, Taro
Netzer, Hagai
Burtscher, Leonard
De Zeeuw, P. Tim
Genzel, Reinhard
Hicks, Erin K. S.
Koss, Michael
Lin, Ming-Yi
Lutz, Dieter
Maciejewski, Witold B.
Muller-Sanchez, Francisco
Orban de Xivry, Gilles
Ricci, Claudio
Riffel, Rogério
Riffel, Rogemar André
Rosario, David
Schartmann, Marc
Müller, Allan Schnorr
Shangguan, J.
Sternberg, Amiel
Sturm, Eckhard
Storchi-Bergmann, Thaisa
Tacconi, Linda J.
Veilleux, Sylvain
author_role author
author2 Baron, Dalya
Shimizu, Taro
Netzer, Hagai
Burtscher, Leonard
De Zeeuw, P. Tim
Genzel, Reinhard
Hicks, Erin K. S.
Koss, Michael
Lin, Ming-Yi
Lutz, Dieter
Maciejewski, Witold B.
Muller-Sanchez, Francisco
Orban de Xivry, Gilles
Ricci, Claudio
Riffel, Rogério
Riffel, Rogemar André
Rosario, David
Schartmann, Marc
Müller, Allan Schnorr
Shangguan, J.
Sternberg, Amiel
Sturm, Eckhard
Storchi-Bergmann, Thaisa
Tacconi, Linda J.
Veilleux, Sylvain
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Davies, Richard I.
Baron, Dalya
Shimizu, Taro
Netzer, Hagai
Burtscher, Leonard
De Zeeuw, P. Tim
Genzel, Reinhard
Hicks, Erin K. S.
Koss, Michael
Lin, Ming-Yi
Lutz, Dieter
Maciejewski, Witold B.
Muller-Sanchez, Francisco
Orban de Xivry, Gilles
Ricci, Claudio
Riffel, Rogério
Riffel, Rogemar André
Rosario, David
Schartmann, Marc
Müller, Allan Schnorr
Shangguan, J.
Sternberg, Amiel
Sturm, Eckhard
Storchi-Bergmann, Thaisa
Tacconi, Linda J.
Veilleux, Sylvain
dc.subject.por.fl_str_mv Galáxias ativas
Meio interestelar
Nucleo galatico
Galaxias seyfert
topic Galáxias ativas
Meio interestelar
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 We report on the determination of electron densities, and their impact on the outflow masses and rates, measured in the central few hundred parsecs of 11 local luminous active galaxies. We show that the peak of the integrated line emission in the active galactic nuclei (AGN) is significantly offset from the systemic velocity as traced by the stellar absorption features, indicating that the profiles are dominated by outflow. In contrast, matched inactive galaxies are characterized by a systemic peak and weaker outflow wing. We present three independent estimates of the electron density in these AGN, discussing the merits of the different methods. The electron density derived from the [S II] doublet is significantly lower than that found with a method developed in the last decade using auroral and transauroral lines, as well as a recently introduced method based on the ionization parameter. The reason is that, for gas photoionized by an AGN, much of the [S II] emission arises in an extended partially ionized zone where the implicit assumption that the electron density traces the hydrogen density is invalid. We propose ways to deal with this situation and we derive the associated outflow rates for ionized gas, which are in the range 0.001–0.5 M yr−1 for our AGN sample. We compare these outflow rates to the relation between M˙ out and LAGN in the literature, and argue that it may need to be modified and rescaled towards lower mass outflow rates.
publishDate 2020
dc.date.issued.fl_str_mv 2020
dc.date.accessioned.fl_str_mv 2021-02-09T04:07:46Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.relation.ispartof.pt_BR.fl_str_mv Monthly notices of the royal astronomical society. Oxford. Vol. 498, no. 3 (Nov. 2020), p. 4150–4177
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