Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/94341 |
Resumo: | We have mapped the gaseous kinematics and the emission-line flux distributions and ratios from the inner≈680 pc radius of the Seyfert 1 galaxy Mrk 79, using two-dimensional (2D) nearinfrared J- and Kl-band spectra obtained with the Gemini instrument Near-Infrared Integral Field Spectrograph at a spatial resolution of ≈100 pc and velocity resolution of ≈40 km s−1. The molecular hydrogen H2 flux distribution presents two spiral arms extending by ≈700 pc, one to the north and another to the south of the nucleus, with an excitation indicating heating by X-rays from the central source. The low-velocity dispersion (σ ≈ 50 km s−1) and rotation pattern supports a location of the H2 gas in the disc of the galaxy. Blueshifts observed along the spiral arm in the far side of the galaxy and redshifts in the spiral arm in the near side, suggest that the spiral arms are feeding channels of H2 to the inner 200 pc. From channel maps along the H2 λ2.1218 μm emission-line profile we estimate a mass inflow rate of ˙MH2 ≈ 4 × 10−3M yr−1, which is one order of magnitude smaller than the mass accretion rate necessary to power the active galactic nucleus (AGN) of Mrk 79. The emission from the ionized gas (traced by Paβ and [Fe II] λ1.2570 μm emission lines) is correlated with the radio jet and with the narrow-band [O III] flux distribution. Its kinematics shows both rotation and outflows to the north and south of the nucleus. The ionized gas mass outflow rate through a cross-section with radius ≈320 pc located at a distance of ≈455 pc from the nucleus is ˙M out ≈ 3.5M yr−1, which is much larger than the AGN mass accretion rate, indicating that most of the outflowing gas originates in the interstellar medium surrounding the galaxy nucleus, which is pushed away by a nuclear jet. |
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Riffel, Rogemar AndréStorchi-Bergmann, ThaisaWinge, Claudia2014-04-15T01:50:50Z20130035-8711http://hdl.handle.net/10183/94341000902837We have mapped the gaseous kinematics and the emission-line flux distributions and ratios from the inner≈680 pc radius of the Seyfert 1 galaxy Mrk 79, using two-dimensional (2D) nearinfrared J- and Kl-band spectra obtained with the Gemini instrument Near-Infrared Integral Field Spectrograph at a spatial resolution of ≈100 pc and velocity resolution of ≈40 km s−1. The molecular hydrogen H2 flux distribution presents two spiral arms extending by ≈700 pc, one to the north and another to the south of the nucleus, with an excitation indicating heating by X-rays from the central source. The low-velocity dispersion (σ ≈ 50 km s−1) and rotation pattern supports a location of the H2 gas in the disc of the galaxy. Blueshifts observed along the spiral arm in the far side of the galaxy and redshifts in the spiral arm in the near side, suggest that the spiral arms are feeding channels of H2 to the inner 200 pc. From channel maps along the H2 λ2.1218 μm emission-line profile we estimate a mass inflow rate of ˙MH2 ≈ 4 × 10−3M yr−1, which is one order of magnitude smaller than the mass accretion rate necessary to power the active galactic nucleus (AGN) of Mrk 79. The emission from the ionized gas (traced by Paβ and [Fe II] λ1.2570 μm emission lines) is correlated with the radio jet and with the narrow-band [O III] flux distribution. Its kinematics shows both rotation and outflows to the north and south of the nucleus. The ionized gas mass outflow rate through a cross-section with radius ≈320 pc located at a distance of ≈455 pc from the nucleus is ˙M out ≈ 3.5M yr−1, which is much larger than the AGN mass accretion rate, indicating that most of the outflowing gas originates in the interstellar medium surrounding the galaxy nucleus, which is pushed away by a nuclear jet.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 430, no. 3 (Apr. 2013), p. 2249-2261Galaxias seyfertNucleo galaticoMoléculas neutras de hidrogênioEspectros astronômicosGalaxies: individual: Mrk 79Galaxies: ISMGalaxies: kinematics and dynamicsGalaxies: seyfertInfrared: galaxiesFeeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79Estrangeiroinfo: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:UFRGSORIGINAL000902837.pdf000902837.pdfTexto completo (inglês)application/pdf7668960http://www.lume.ufrgs.br/bitstream/10183/94341/1/000902837.pdfe796cb7afd79961db758710ffe563edeMD51TEXT000902837.pdf.txt000902837.pdf.txtExtracted Texttext/plain61632http://www.lume.ufrgs.br/bitstream/10183/94341/2/000902837.pdf.txtd5229ea9c933dacdaed161e995a8e645MD52THUMBNAIL000902837.pdf.jpg000902837.pdf.jpgGenerated Thumbnailimage/jpeg2202http://www.lume.ufrgs.br/bitstream/10183/94341/3/000902837.pdf.jpge6622653bb4c3b9e913d7ddf7064da43MD5310183/943412018-10-09 08:59:34.316oai:www.lume.ufrgs.br:10183/94341Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-09T11:59:34Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 |
title |
Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 |
spellingShingle |
Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 Riffel, Rogemar André Galaxias seyfert Nucleo galatico Moléculas neutras de hidrogênio Espectros astronômicos Galaxies: individual: Mrk 79 Galaxies: ISM Galaxies: kinematics and dynamics Galaxies: seyfert Infrared: galaxies |
title_short |
Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 |
title_full |
Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 |
title_fullStr |
Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 |
title_full_unstemmed |
Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 |
title_sort |
Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 |
author |
Riffel, Rogemar André |
author_facet |
Riffel, Rogemar André Storchi-Bergmann, Thaisa Winge, Claudia |
author_role |
author |
author2 |
Storchi-Bergmann, Thaisa Winge, Claudia |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Riffel, Rogemar André Storchi-Bergmann, Thaisa Winge, Claudia |
dc.subject.por.fl_str_mv |
Galaxias seyfert Nucleo galatico Moléculas neutras de hidrogênio Espectros astronômicos |
topic |
Galaxias seyfert Nucleo galatico Moléculas neutras de hidrogênio Espectros astronômicos Galaxies: individual: Mrk 79 Galaxies: ISM Galaxies: kinematics and dynamics Galaxies: seyfert Infrared: galaxies |
dc.subject.eng.fl_str_mv |
Galaxies: individual: Mrk 79 Galaxies: ISM Galaxies: kinematics and dynamics Galaxies: seyfert Infrared: galaxies |
description |
We have mapped the gaseous kinematics and the emission-line flux distributions and ratios from the inner≈680 pc radius of the Seyfert 1 galaxy Mrk 79, using two-dimensional (2D) nearinfrared J- and Kl-band spectra obtained with the Gemini instrument Near-Infrared Integral Field Spectrograph at a spatial resolution of ≈100 pc and velocity resolution of ≈40 km s−1. The molecular hydrogen H2 flux distribution presents two spiral arms extending by ≈700 pc, one to the north and another to the south of the nucleus, with an excitation indicating heating by X-rays from the central source. The low-velocity dispersion (σ ≈ 50 km s−1) and rotation pattern supports a location of the H2 gas in the disc of the galaxy. Blueshifts observed along the spiral arm in the far side of the galaxy and redshifts in the spiral arm in the near side, suggest that the spiral arms are feeding channels of H2 to the inner 200 pc. From channel maps along the H2 λ2.1218 μm emission-line profile we estimate a mass inflow rate of ˙MH2 ≈ 4 × 10−3M yr−1, which is one order of magnitude smaller than the mass accretion rate necessary to power the active galactic nucleus (AGN) of Mrk 79. The emission from the ionized gas (traced by Paβ and [Fe II] λ1.2570 μm emission lines) is correlated with the radio jet and with the narrow-band [O III] flux distribution. Its kinematics shows both rotation and outflows to the north and south of the nucleus. The ionized gas mass outflow rate through a cross-section with radius ≈320 pc located at a distance of ≈455 pc from the nucleus is ˙M out ≈ 3.5M yr−1, which is much larger than the AGN mass accretion rate, indicating that most of the outflowing gas originates in the interstellar medium surrounding the galaxy nucleus, which is pushed away by a nuclear jet. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013 |
dc.date.accessioned.fl_str_mv |
2014-04-15T01:50:50Z |
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/10183/94341 |
dc.identifier.issn.pt_BR.fl_str_mv |
0035-8711 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000902837 |
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url |
http://hdl.handle.net/10183/94341 |
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. 430, no. 3 (Apr. 2013), p. 2249-2261 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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