Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae

Autores
Dors Jr., O. L.; Krabbe, Angela; Hägele, Guillermo Federico; Pérez Montero, Enrique
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We analyse the reliability of oxygen abundances and ionization parameters obtained from a number of diagnostic diagrams. To do this, we used the literature to compile the observational emission-line intensities and oxygen abundances of 446 star-forming regions whose O/H abundances were determined by direct estimation of the electron temperature. These compiled abundances were compared with the values calculated in this work using various diagnostic diagrams in combination with results from a grid of photoionization models.We found that the [O III]/[O II] versus [NII]/[O II], [O III]/Hβ versus [NII]/[O II] and ([O III]/Hβ)/([N II]/Hα) versus [S II]/[S III] diagnostic diagrams gave O/H values close to those obtained using the electron temperature, with differences of about 0.04 dex and a dispersion of about 0.3 dex. Similar results were obtained by detailed models, but with a dispersion of 0.08 dex. The origin of the dispersion found with the use of diagnostic diagrams is probably the differences between the real N/O–O/H relation of the sample and the one assumed in the models. This is confirmed by the use of detailed models that do not have a fixed N/O–O/H relation.We found no correlation between the ionization parameter and metallicity for the objects of our sample. We conclude that the combination of two line ratios predicted by photoionization models, one sensitive to the metallicity and the other sensitive to the ionization parameter, which takes into account the physical conditions of star-forming regions, gives O/H estimates close to the values derived using direct detections of electron temperature.
Fil: Dors Jr., O. L.. Universidade do Vale do Paraíba; Brasil
Fil: Krabbe, Angela . Universidade do Vale do Paraíba; Brasil
Fil: Hägele, Guillermo Federico. Universidad Autónoma de Madrid; España. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Pérez Montero, Enrique. Instituto de Astrofísica de Andalucía; España
Materia
Abundances
Evolution of galaxies
Formation of galaxies
Insterstellar 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:11336/10086
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/10086
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulaeDors Jr., O. L.Krabbe, Angela Hägele, Guillermo FedericoPérez Montero, EnriqueAbundancesEvolution of galaxiesFormation of galaxiesInsterstellar mediumhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We analyse the reliability of oxygen abundances and ionization parameters obtained from a number of diagnostic diagrams. To do this, we used the literature to compile the observational emission-line intensities and oxygen abundances of 446 star-forming regions whose O/H abundances were determined by direct estimation of the electron temperature. These compiled abundances were compared with the values calculated in this work using various diagnostic diagrams in combination with results from a grid of photoionization models.We found that the [O III]/[O II] versus [NII]/[O II], [O III]/Hβ versus [NII]/[O II] and ([O III]/Hβ)/([N II]/Hα) versus [S II]/[S III] diagnostic diagrams gave O/H values close to those obtained using the electron temperature, with differences of about 0.04 dex and a dispersion of about 0.3 dex. Similar results were obtained by detailed models, but with a dispersion of 0.08 dex. The origin of the dispersion found with the use of diagnostic diagrams is probably the differences between the real N/O–O/H relation of the sample and the one assumed in the models. This is confirmed by the use of detailed models that do not have a fixed N/O–O/H relation.We found no correlation between the ionization parameter and metallicity for the objects of our sample. We conclude that the combination of two line ratios predicted by photoionization models, one sensitive to the metallicity and the other sensitive to the ionization parameter, which takes into account the physical conditions of star-forming regions, gives O/H estimates close to the values derived using direct detections of electron temperature.Fil: Dors Jr., O. L.. Universidade do Vale do Paraíba; BrasilFil: Krabbe, Angela . Universidade do Vale do Paraíba; BrasilFil: Hägele, Guillermo Federico. Universidad Autónoma de Madrid; España. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: Pérez Montero, Enrique. Instituto de Astrofísica de Andalucía; EspañaRoyal Astronomical Society2011-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10086Dors Jr., O. L.; Krabbe, Angela ; Hägele, Guillermo Federico; Pérez Montero, Enrique; Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae; Royal Astronomical Society; Monthly Notices Of The Royal Astronomical Society; 415; 1-2011; 3616-36260035-8711enginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2011.18978.xinfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2011.18978.x/fullinfo:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/415/4/3616info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:38:10Zoai:ri.conicet.gov.ar:11336/10086instacron: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:34982025-10-22 11:38:10.292CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae
title Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae
spellingShingle Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae
Dors Jr., O. L.
Abundances
Evolution of galaxies
Formation of galaxies
Insterstellar medium
title_short Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae
title_full Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae
title_fullStr Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae
title_full_unstemmed Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae
title_sort Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae
dc.creator.none.fl_str_mv Dors Jr., O. L.
Krabbe, Angela
Hägele, Guillermo Federico
Pérez Montero, Enrique
author Dors Jr., O. L.
author_facet Dors Jr., O. L.
Krabbe, Angela
Hägele, Guillermo Federico
Pérez Montero, Enrique
author_role author
author2 Krabbe, Angela
Hägele, Guillermo Federico
Pérez Montero, Enrique
author2_role author
author
author
dc.subject.none.fl_str_mv Abundances
Evolution of galaxies
Formation of galaxies
Insterstellar medium
topic Abundances
Evolution of galaxies
Formation of galaxies
Insterstellar 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 analyse the reliability of oxygen abundances and ionization parameters obtained from a number of diagnostic diagrams. To do this, we used the literature to compile the observational emission-line intensities and oxygen abundances of 446 star-forming regions whose O/H abundances were determined by direct estimation of the electron temperature. These compiled abundances were compared with the values calculated in this work using various diagnostic diagrams in combination with results from a grid of photoionization models.We found that the [O III]/[O II] versus [NII]/[O II], [O III]/Hβ versus [NII]/[O II] and ([O III]/Hβ)/([N II]/Hα) versus [S II]/[S III] diagnostic diagrams gave O/H values close to those obtained using the electron temperature, with differences of about 0.04 dex and a dispersion of about 0.3 dex. Similar results were obtained by detailed models, but with a dispersion of 0.08 dex. The origin of the dispersion found with the use of diagnostic diagrams is probably the differences between the real N/O–O/H relation of the sample and the one assumed in the models. This is confirmed by the use of detailed models that do not have a fixed N/O–O/H relation.We found no correlation between the ionization parameter and metallicity for the objects of our sample. We conclude that the combination of two line ratios predicted by photoionization models, one sensitive to the metallicity and the other sensitive to the ionization parameter, which takes into account the physical conditions of star-forming regions, gives O/H estimates close to the values derived using direct detections of electron temperature.
Fil: Dors Jr., O. L.. Universidade do Vale do Paraíba; Brasil
Fil: Krabbe, Angela . Universidade do Vale do Paraíba; Brasil
Fil: Hägele, Guillermo Federico. Universidad Autónoma de Madrid; España. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Pérez Montero, Enrique. Instituto de Astrofísica de Andalucía; España
description We analyse the reliability of oxygen abundances and ionization parameters obtained from a number of diagnostic diagrams. To do this, we used the literature to compile the observational emission-line intensities and oxygen abundances of 446 star-forming regions whose O/H abundances were determined by direct estimation of the electron temperature. These compiled abundances were compared with the values calculated in this work using various diagnostic diagrams in combination with results from a grid of photoionization models.We found that the [O III]/[O II] versus [NII]/[O II], [O III]/Hβ versus [NII]/[O II] and ([O III]/Hβ)/([N II]/Hα) versus [S II]/[S III] diagnostic diagrams gave O/H values close to those obtained using the electron temperature, with differences of about 0.04 dex and a dispersion of about 0.3 dex. Similar results were obtained by detailed models, but with a dispersion of 0.08 dex. The origin of the dispersion found with the use of diagnostic diagrams is probably the differences between the real N/O–O/H relation of the sample and the one assumed in the models. This is confirmed by the use of detailed models that do not have a fixed N/O–O/H relation.We found no correlation between the ionization parameter and metallicity for the objects of our sample. We conclude that the combination of two line ratios predicted by photoionization models, one sensitive to the metallicity and the other sensitive to the ionization parameter, which takes into account the physical conditions of star-forming regions, gives O/H estimates close to the values derived using direct detections of electron temperature.
publishDate 2011
dc.date.none.fl_str_mv 2011-01
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/11336/10086
Dors Jr., O. L.; Krabbe, Angela ; Hägele, Guillermo Federico; Pérez Montero, Enrique; Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae; Royal Astronomical Society; Monthly Notices Of The Royal Astronomical Society; 415; 1-2011; 3616-3626
0035-8711
url http://hdl.handle.net/11336/10086
identifier_str_mv Dors Jr., O. L.; Krabbe, Angela ; Hägele, Guillermo Federico; Pérez Montero, Enrique; Analysing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae; Royal Astronomical Society; Monthly Notices Of The Royal Astronomical Society; 415; 1-2011; 3616-3626
0035-8711
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2011.18978.x
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2011.18978.x/full
info:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/415/4/3616
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
dc.publisher.none.fl_str_mv Royal Astronomical Society
publisher.none.fl_str_mv Royal Astronomical Society
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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score 12.982451

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