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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/10086
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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 Técnicas2025-09-29T10:08:16Zoai: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:34982025-09-29 10:08:16.339CONICET 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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1844613949745528832 |
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13.070432 |