X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies

Autores
Dors, Oli L.; Riffel, Rogemar A.; Cardaci, Monica Viviana; Hägele, Guillermo Federico; Krabbe, Angela; Pérez Montero, Enrique; Rodrigues, Irapuan
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We investigate the excitation mechanisms of near-infrared [Fe II] and H2 emission lines observed in active galactic nuclei (AGNs). We built a photoionization model grid considering a two-component continuum: one component accounts for the `big bump´ component peaking at 1Ryd and another represents the X-ray source that dominates the continuum emission at high energies. Photoionization models considering as ionizing source a spectral energy distribution obtained from photometric data of Seyfert 2 Mrk 1066 taken from the literature were considered. Results of these models were compared with a large sample of observational long-slit and Integral field Unit (IFU) spectroscopy data of the nuclear region for a sample of active objects. We found that the correlation between the observational [Fe II] lambda 1.2570μm/Pa beta and H2 lambda 2.1218μm/Brγ is well reproduced by our models, as are the relationships that involve the H2 emission-line ratios observed in the spectroscopic data. We conclude that heating by X-rays produced by active nuclei can be considered a common and very important mechanism of excitation of [Fe II] and H2.
Fil: Dors, Oli L.. Universidade Do Vale Do Paraíba; Brasil
Fil: Riffel, Rogemar A.. Universidade Federal de Santa Maria; Brasil
Fil: Cardaci, Monica Viviana. Universidad Autónoma de Madrid. Facultad de Ciencias; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Hägele, Guillermo Federico. Universidad Autónoma de Madrid. Facultad de Ciencias; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Krabbe, Angela. Universidade Do Vale Do Paraíba; Brasil
Fil: Pérez Montero, Enrique. Inst. de Astrofísica de Andalucía; España
Fil: Rodrigues, Irapuan. Universidade Do Vale Do Paraíba; Brasil
Materia
Galaxies
Seyfert galaxies
Infrared galaxies
Interstellar medium
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/42650

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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxiesDors, Oli L.Riffel, Rogemar A.Cardaci, Monica VivianaHägele, Guillermo FedericoKrabbe, AngelaPérez Montero, EnriqueRodrigues, IrapuanGalaxiesSeyfert galaxiesInfrared galaxiesInterstellar mediumhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We investigate the excitation mechanisms of near-infrared [Fe II] and H2 emission lines observed in active galactic nuclei (AGNs). We built a photoionization model grid considering a two-component continuum: one component accounts for the `big bump´ component peaking at 1Ryd and another represents the X-ray source that dominates the continuum emission at high energies. Photoionization models considering as ionizing source a spectral energy distribution obtained from photometric data of Seyfert 2 Mrk 1066 taken from the literature were considered. Results of these models were compared with a large sample of observational long-slit and Integral field Unit (IFU) spectroscopy data of the nuclear region for a sample of active objects. We found that the correlation between the observational [Fe II] lambda 1.2570μm/Pa beta and H2 lambda 2.1218μm/Brγ is well reproduced by our models, as are the relationships that involve the H2 emission-line ratios observed in the spectroscopic data. We conclude that heating by X-rays produced by active nuclei can be considered a common and very important mechanism of excitation of [Fe II] and H2.Fil: Dors, Oli L.. Universidade Do Vale Do Paraíba; BrasilFil: Riffel, Rogemar A.. Universidade Federal de Santa Maria; BrasilFil: Cardaci, Monica Viviana. Universidad Autónoma de Madrid. Facultad de Ciencias; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Hägele, Guillermo Federico. Universidad Autónoma de Madrid. Facultad de Ciencias; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Krabbe, Angela. Universidade Do Vale Do Paraíba; BrasilFil: Pérez Montero, Enrique. Inst. de Astrofísica de Andalucía; EspañaFil: Rodrigues, Irapuan. Universidade Do Vale Do Paraíba; BrasilWiley Blackwell Publishing, Inc2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/42650Dors, Oli L.; Riffel, Rogemar A.; Cardaci, Monica Viviana; Hägele, Guillermo Federico; Krabbe, Angela; et al.; X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 422; 1; 5-2012; 252-2600035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.20600.xinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/422/1/252/1020740info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:00:31Zoai:ri.conicet.gov.ar:11336/42650instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:00:32.24CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies
title X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies
spellingShingle X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies
Dors, Oli L.
Galaxies
Seyfert galaxies
Infrared galaxies
Interstellar medium
title_short X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies
title_full X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies
title_fullStr X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies
title_full_unstemmed X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies
title_sort X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies
dc.creator.none.fl_str_mv Dors, Oli L.
Riffel, Rogemar A.
Cardaci, Monica Viviana
Hägele, Guillermo Federico
Krabbe, Angela
Pérez Montero, Enrique
Rodrigues, Irapuan
author Dors, Oli L.
author_facet Dors, Oli L.
Riffel, Rogemar A.
Cardaci, Monica Viviana
Hägele, Guillermo Federico
Krabbe, Angela
Pérez Montero, Enrique
Rodrigues, Irapuan
author_role author
author2 Riffel, Rogemar A.
Cardaci, Monica Viviana
Hägele, Guillermo Federico
Krabbe, Angela
Pérez Montero, Enrique
Rodrigues, Irapuan
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Galaxies
Seyfert galaxies
Infrared galaxies
Interstellar medium
topic Galaxies
Seyfert galaxies
Infrared galaxies
Interstellar medium
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We investigate the excitation mechanisms of near-infrared [Fe II] and H2 emission lines observed in active galactic nuclei (AGNs). We built a photoionization model grid considering a two-component continuum: one component accounts for the `big bump´ component peaking at 1Ryd and another represents the X-ray source that dominates the continuum emission at high energies. Photoionization models considering as ionizing source a spectral energy distribution obtained from photometric data of Seyfert 2 Mrk 1066 taken from the literature were considered. Results of these models were compared with a large sample of observational long-slit and Integral field Unit (IFU) spectroscopy data of the nuclear region for a sample of active objects. We found that the correlation between the observational [Fe II] lambda 1.2570μm/Pa beta and H2 lambda 2.1218μm/Brγ is well reproduced by our models, as are the relationships that involve the H2 emission-line ratios observed in the spectroscopic data. We conclude that heating by X-rays produced by active nuclei can be considered a common and very important mechanism of excitation of [Fe II] and H2.
Fil: Dors, Oli L.. Universidade Do Vale Do Paraíba; Brasil
Fil: Riffel, Rogemar A.. Universidade Federal de Santa Maria; Brasil
Fil: Cardaci, Monica Viviana. Universidad Autónoma de Madrid. Facultad de Ciencias; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Hägele, Guillermo Federico. Universidad Autónoma de Madrid. Facultad de Ciencias; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Krabbe, Angela. Universidade Do Vale Do Paraíba; Brasil
Fil: Pérez Montero, Enrique. Inst. de Astrofísica de Andalucía; España
Fil: Rodrigues, Irapuan. Universidade Do Vale Do Paraíba; Brasil
description We investigate the excitation mechanisms of near-infrared [Fe II] and H2 emission lines observed in active galactic nuclei (AGNs). We built a photoionization model grid considering a two-component continuum: one component accounts for the `big bump´ component peaking at 1Ryd and another represents the X-ray source that dominates the continuum emission at high energies. Photoionization models considering as ionizing source a spectral energy distribution obtained from photometric data of Seyfert 2 Mrk 1066 taken from the literature were considered. Results of these models were compared with a large sample of observational long-slit and Integral field Unit (IFU) spectroscopy data of the nuclear region for a sample of active objects. We found that the correlation between the observational [Fe II] lambda 1.2570μm/Pa beta and H2 lambda 2.1218μm/Brγ is well reproduced by our models, as are the relationships that involve the H2 emission-line ratios observed in the spectroscopic data. We conclude that heating by X-rays produced by active nuclei can be considered a common and very important mechanism of excitation of [Fe II] and H2.
publishDate 2012
dc.date.none.fl_str_mv 2012-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/42650
Dors, Oli L.; Riffel, Rogemar A.; Cardaci, Monica Viviana; Hägele, Guillermo Federico; Krabbe, Angela; et al.; X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 422; 1; 5-2012; 252-260
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/42650
identifier_str_mv Dors, Oli L.; Riffel, Rogemar A.; Cardaci, Monica Viviana; Hägele, Guillermo Federico; Krabbe, Angela; et al.; X-rays as the dominant excitation mechanism of [Fe II] and H2 emission lines in active galaxies; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 422; 1; 5-2012; 252-260
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.20600.x
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/422/1/252/1020740
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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