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

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...

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Detalles Bibliográficos
Autores principales:	Dors, Oli L., Pérez Montero, E., Hägele, Guillermo Federico, Cardaci, Mónica Viviana, Krabbe, A. C.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2016
Materias:	Astronomía galaxies: abundances galaxies: evolution galaxies: formation galaxies: general galaxies: ISM
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/93863 https://academic.oup.com/mnras/article-abstract/456/4/4407/1036277?redirectedFrom=fulltext https://ri.conicet.gov.ar/handle/11336/35921
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-93863
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Astronomía galaxies: abundances galaxies: evolution galaxies: formation galaxies: general galaxies: ISM
spellingShingle	Astronomía galaxies: abundances galaxies: evolution galaxies: formation galaxies: general galaxies: ISM Dors, Oli L. Pérez Montero, E. Hägele, Guillermo Federico Cardaci, Mónica Viviana Krabbe, A. C. Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
topic_facet	Astronomía galaxies: abundances galaxies: evolution galaxies: formation galaxies: general galaxies: ISM
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.
format	Articulo Articulo
author	Dors, Oli L. Pérez Montero, E. Hägele, Guillermo Federico Cardaci, Mónica Viviana Krabbe, A. C.
author_facet	Dors, Oli L. Pérez Montero, E. Hägele, Guillermo Federico Cardaci, Mónica Viviana Krabbe, A. C.
author_sort	Dors, Oli L.
title	Sulphur abundance determinations in star-forming regions : I. Ionization correction factor
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
publishDate	2016
url	http://sedici.unlp.edu.ar/handle/10915/93863 https://academic.oup.com/mnras/article-abstract/456/4/4407/1036277?redirectedFrom=fulltext https://ri.conicet.gov.ar/handle/11336/35921
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bdutipo_str	Repositorios
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Sulphur abundance determinations in star-forming regions : I. Ionization correction factor

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