Sulphur abundance determinations in star-forming regions : I. Ionization correction factor

Autores
Dors, Oli L.; Pérez Montero, E.; Hägele, Guillermo Federico; Cardaci, Mónica Viviana; Krabbe, A. C.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, we used a grid of photoionization models combined with stellar population synthesis models to derive reliable ionization correction factors (ICFs) for the sulphur in star-forming regions. These models cover a large range of nebular parameters and yielding ionic abundances in consonance with those derived through optical and infrared observational data of star-forming regions. From our theoretical ICFs, we suggested an α value of 3.27 ± 0.01 in the classical Stasińska formulae. We compared the total sulphur abundance in the gas phase of a large sample of objects by using our theoretical ICF and other approaches. In average, the differences between the determinations via the use of the different ICFs considered are similar to the uncertainties in the S/H estimations. Nevertheless, we noted that for some objects it could reach up to about 0.3 dex for the low-metallicity regime. Despite of the large scatter of the points, we found a trend of S/O ratio to decrease with the metallicity, independently of the ICF used to compute the sulphur total abundance.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
Materia
Astronomía
galaxies: abundances
galaxies: evolution
galaxies: formation
galaxies: general
galaxies: ISM
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:10915/93863

id SEDICI_aed00a481b51aede6fe504a163abea64
oai_identifier_str oai:sedici.unlp.edu.ar:10915/93863
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Sulphur abundance determinations in star-forming regions : I. Ionization correction factorDors, Oli L.Pérez Montero, E.Hägele, Guillermo FedericoCardaci, Mónica VivianaKrabbe, A. C.Astronomíagalaxies: abundancesgalaxies: evolutiongalaxies: formationgalaxies: generalgalaxies: ISMIn this work, we used a grid of photoionization models combined with stellar population synthesis models to derive reliable ionization correction factors (ICFs) for the sulphur in star-forming regions. These models cover a large range of nebular parameters and yielding ionic abundances in consonance with those derived through optical and infrared observational data of star-forming regions. From our theoretical ICFs, we suggested an α value of 3.27 ± 0.01 in the classical Stasińska formulae. We compared the total sulphur abundance in the gas phase of a large sample of objects by using our theoretical ICF and other approaches. In average, the differences between the determinations via the use of the different ICFs considered are similar to the uncertainties in the S/H estimations. Nevertheless, we noted that for some objects it could reach up to about 0.3 dex for the low-metallicity regime. Despite of the large scatter of the points, we found a trend of S/O ratio to decrease with the metallicity, independently of the ICF used to compute the sulphur total abundance.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2016-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf4407-4424http://sedici.unlp.edu.ar/handle/10915/93863enginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/456/4/4407/1036277?redirectedFrom=fulltextinfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/handle/11336/35921info:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stv2995info:eu-repo/semantics/altIdentifier/hdl/11336/35921info: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:UNLP2025-09-29T11:19:26Zoai:sedici.unlp.edu.ar:10915/93863Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:19:27.036SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
title Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
spellingShingle Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
Dors, Oli L.
Astronomía
galaxies: abundances
galaxies: evolution
galaxies: formation
galaxies: general
galaxies: ISM
title_short Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
title_full Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
title_fullStr Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
title_full_unstemmed Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
title_sort Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
dc.creator.none.fl_str_mv Dors, Oli L.
Pérez Montero, E.
Hägele, Guillermo Federico
Cardaci, Mónica Viviana
Krabbe, A. C.
author Dors, Oli L.
author_facet Dors, Oli L.
Pérez Montero, E.
Hägele, Guillermo Federico
Cardaci, Mónica Viviana
Krabbe, A. C.
author_role author
author2 Pérez Montero, E.
Hägele, Guillermo Federico
Cardaci, Mónica Viviana
Krabbe, A. C.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Astronomía
galaxies: abundances
galaxies: evolution
galaxies: formation
galaxies: general
galaxies: ISM
topic Astronomía
galaxies: abundances
galaxies: evolution
galaxies: formation
galaxies: general
galaxies: ISM
dc.description.none.fl_txt_mv In this work, we used a grid of photoionization models combined with stellar population synthesis models to derive reliable ionization correction factors (ICFs) for the sulphur in star-forming regions. These models cover a large range of nebular parameters and yielding ionic abundances in consonance with those derived through optical and infrared observational data of star-forming regions. From our theoretical ICFs, we suggested an α value of 3.27 ± 0.01 in the classical Stasińska formulae. We compared the total sulphur abundance in the gas phase of a large sample of objects by using our theoretical ICF and other approaches. In average, the differences between the determinations via the use of the different ICFs considered are similar to the uncertainties in the S/H estimations. Nevertheless, we noted that for some objects it could reach up to about 0.3 dex for the low-metallicity regime. Despite of the large scatter of the points, we found a trend of S/O ratio to decrease with the metallicity, independently of the ICF used to compute the sulphur total abundance.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
description In this work, we used a grid of photoionization models combined with stellar population synthesis models to derive reliable ionization correction factors (ICFs) for the sulphur in star-forming regions. These models cover a large range of nebular parameters and yielding ionic abundances in consonance with those derived through optical and infrared observational data of star-forming regions. From our theoretical ICFs, we suggested an α value of 3.27 ± 0.01 in the classical Stasińska formulae. We compared the total sulphur abundance in the gas phase of a large sample of objects by using our theoretical ICF and other approaches. In average, the differences between the determinations via the use of the different ICFs considered are similar to the uncertainties in the S/H estimations. Nevertheless, we noted that for some objects it could reach up to about 0.3 dex for the low-metallicity regime. Despite of the large scatter of the points, we found a trend of S/O ratio to decrease with the metallicity, independently of the ICF used to compute the sulphur total abundance.
publishDate 2016
dc.date.none.fl_str_mv 2016-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/93863
url http://sedici.unlp.edu.ar/handle/10915/93863
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/456/4/4407/1036277?redirectedFrom=fulltext
info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/handle/11336/35921
info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stv2995
info:eu-repo/semantics/altIdentifier/hdl/11336/35921
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
4407-4424
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
_version_ 1844616068155310080
score 13.070432