Abundance estimations in the NLRs of Type 2 AGNs

Autores
Cardaci, Mónica Viviana; Dors, Oli Luiz; Hägele, Guillermo Federico; Krabbe, Angela Cristina
Año de publicación
2019
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Chemical abundances of the Narrow Line Regions (NLRs) of Active Galactic Nuclei (AGNs) are still poorly estimated. It is not clear that the methods developed for the study of the gas phase in HII regions are valid and/or provide accurate/realistic estimations of the NLRs abundances. Here we present a brief summary of the work carried out by our group on the study of chemical abundances of the NLRs associated to type 2 AGNs. We used different grids of photoionization models built using the Cloudy code. We derived new indexes to estimate the oxygen abundances of the NLRs using ultra violet and optical emission lines combined with the grids of photoionization models. We also obtained new quantitative determinations of the nitrogen abundance and a consistent relation between the nitrogen and oxygen abundances for a sample of nearby Seyfert 2 galaxies, located at redshift z < 0.1. Our results for N/O vs. O/H abundance ratios derived for Seyfert 2 galaxies are in consonance with those derived for a sample of extragalactic disc HII regions with high metallicity.
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
galaxies: abundances
galaxies: ISM
galaxies: active
galaxies: Seyfert
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/167499
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/167499
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Abundance estimations in the NLRs of Type 2 AGNsCardaci, Mónica VivianaDors, Oli LuizHägele, Guillermo FedericoKrabbe, Angela CristinaCiencias Astronómicasgalaxies: abundancesgalaxies: ISMgalaxies: activegalaxies: SeyfertChemical abundances of the Narrow Line Regions (NLRs) of Active Galactic Nuclei (AGNs) are still poorly estimated. It is not clear that the methods developed for the study of the gas phase in HII regions are valid and/or provide accurate/realistic estimations of the NLRs abundances. Here we present a brief summary of the work carried out by our group on the study of chemical abundances of the NLRs associated to type 2 AGNs. We used different grids of photoionization models built using the Cloudy code. We derived new indexes to estimate the oxygen abundances of the NLRs using ultra violet and optical emission lines combined with the grids of photoionization models. We also obtained new quantitative determinations of the nitrogen abundance and a consistent relation between the nitrogen and oxygen abundances for a sample of nearby Seyfert 2 galaxies, located at redshift z &lt; 0.1. Our results for N/O vs. O/H abundance ratios derived for Seyfert 2 galaxies are in consonance with those derived for a sample of extragalactic disc HII regions with high metallicity.Instituto de Astrofísica de La Plata2019-03info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionObjeto de conferenciahttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdf177-182http://sedici.unlp.edu.ar/handle/10915/167499enginfo:eu-repo/semantics/altIdentifier/isbn/978-987-24948-6-5info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T11:16:29Zoai:sedici.unlp.edu.ar:10915/167499Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 11:16:30.124SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Abundance estimations in the NLRs of Type 2 AGNs
title Abundance estimations in the NLRs of Type 2 AGNs
spellingShingle Abundance estimations in the NLRs of Type 2 AGNs
Cardaci, Mónica Viviana
Ciencias Astronómicas
galaxies: abundances
galaxies: ISM
galaxies: active
galaxies: Seyfert
title_short Abundance estimations in the NLRs of Type 2 AGNs
title_full Abundance estimations in the NLRs of Type 2 AGNs
title_fullStr Abundance estimations in the NLRs of Type 2 AGNs
title_full_unstemmed Abundance estimations in the NLRs of Type 2 AGNs
title_sort Abundance estimations in the NLRs of Type 2 AGNs
dc.creator.none.fl_str_mv Cardaci, Mónica Viviana
Dors, Oli Luiz
Hägele, Guillermo Federico
Krabbe, Angela Cristina
author Cardaci, Mónica Viviana
author_facet Cardaci, Mónica Viviana
Dors, Oli Luiz
Hägele, Guillermo Federico
Krabbe, Angela Cristina
author_role author
author2 Dors, Oli Luiz
Hägele, Guillermo Federico
Krabbe, Angela Cristina
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
galaxies: abundances
galaxies: ISM
galaxies: active
galaxies: Seyfert
topic Ciencias Astronómicas
galaxies: abundances
galaxies: ISM
galaxies: active
galaxies: Seyfert
dc.description.none.fl_txt_mv Chemical abundances of the Narrow Line Regions (NLRs) of Active Galactic Nuclei (AGNs) are still poorly estimated. It is not clear that the methods developed for the study of the gas phase in HII regions are valid and/or provide accurate/realistic estimations of the NLRs abundances. Here we present a brief summary of the work carried out by our group on the study of chemical abundances of the NLRs associated to type 2 AGNs. We used different grids of photoionization models built using the Cloudy code. We derived new indexes to estimate the oxygen abundances of the NLRs using ultra violet and optical emission lines combined with the grids of photoionization models. We also obtained new quantitative determinations of the nitrogen abundance and a consistent relation between the nitrogen and oxygen abundances for a sample of nearby Seyfert 2 galaxies, located at redshift z &lt; 0.1. Our results for N/O vs. O/H abundance ratios derived for Seyfert 2 galaxies are in consonance with those derived for a sample of extragalactic disc HII regions with high metallicity.
Instituto de Astrofísica de La Plata
description Chemical abundances of the Narrow Line Regions (NLRs) of Active Galactic Nuclei (AGNs) are still poorly estimated. It is not clear that the methods developed for the study of the gas phase in HII regions are valid and/or provide accurate/realistic estimations of the NLRs abundances. Here we present a brief summary of the work carried out by our group on the study of chemical abundances of the NLRs associated to type 2 AGNs. We used different grids of photoionization models built using the Cloudy code. We derived new indexes to estimate the oxygen abundances of the NLRs using ultra violet and optical emission lines combined with the grids of photoionization models. We also obtained new quantitative determinations of the nitrogen abundance and a consistent relation between the nitrogen and oxygen abundances for a sample of nearby Seyfert 2 galaxies, located at redshift z &lt; 0.1. Our results for N/O vs. O/H abundance ratios derived for Seyfert 2 galaxies are in consonance with those derived for a sample of extragalactic disc HII regions with high metallicity.
publishDate 2019
dc.date.none.fl_str_mv 2019-03
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
Objeto de conferencia
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/167499
url http://sedici.unlp.edu.ar/handle/10915/167499
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/isbn/978-987-24948-6-5
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
177-182
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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