Optical and mid-infrared neon abundance determinations in star-forming regions

We have used observational spectroscopic data of star-forming regions compiled from the literature and photoionization models to analyse the neon ionic abundances obtained using both optical and mid-infrared emission lines. Comparing Ne<SUP>++</SUP>/H<SUP>+</SUP> ionic abunda...

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Autores principales: Dors Junior, Oli L., Hägele, Guillermo Federico, Cardaci, Mónica Viviana, Pérez Montero, Enrique, Krabbe, Ângela C., Vílchez, José M., Sales, Dinalva A., Riffel, Rogério, Riffel, Rogemar A.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Astronómicas
Galaxies: abundances
Galaxies: evolution
Galaxies: formation
Galaxies: general
Galaxies: ISM
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85522
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85522
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Galaxies: abundances
Galaxies: evolution
Galaxies: formation
Galaxies: general
Galaxies: ISM
spellingShingle Ciencias Astronómicas
Galaxies: abundances
Galaxies: evolution
Galaxies: formation
Galaxies: general
Galaxies: ISM
Dors Junior, Oli L.
Hägele, Guillermo Federico
Cardaci, Mónica Viviana
Pérez Montero, Enrique
Krabbe, Ângela C.
Vílchez, José M.
Sales, Dinalva A.
Riffel, Rogério
Riffel, Rogemar A.
Optical and mid-infrared neon abundance determinations in star-forming regions
topic_facet Ciencias Astronómicas
Galaxies: abundances
Galaxies: evolution
Galaxies: formation
Galaxies: general
Galaxies: ISM
description We have used observational spectroscopic data of star-forming regions compiled from the literature and photoionization models to analyse the neon ionic abundances obtained using both optical and mid-infrared emission lines. Comparing Ne<SUP>++</SUP>/H<SUP>+</SUP> ionic abundances from distinct methods, we have found that, on average, the abundances obtained via infrared emission lines are higher than those obtained via optical lines, by a factor of 4. Photoionization models with abundance variations along the radius of the hypothetical nebula provide a possible explanation for a large part of the difference between ionic abundances via optical and infrared emission lines. The ionization correction factor (ICF) for the neon is obtained from direct determinations of ionic fractions using infrared emission lines. We derive a constant Ne/O ratio (log Ne/O ≈ -0.70) for a large range of metallicities, independently of the ICF used to compute the neon total abundance.
format Articulo
Articulo
author Dors Junior, Oli L.
Hägele, Guillermo Federico
Cardaci, Mónica Viviana
Pérez Montero, Enrique
Krabbe, Ângela C.
Vílchez, José M.
Sales, Dinalva A.
Riffel, Rogério
Riffel, Rogemar A.
author_facet Dors Junior, Oli L.
Hägele, Guillermo Federico
Cardaci, Mónica Viviana
Pérez Montero, Enrique
Krabbe, Ângela C.
Vílchez, José M.
Sales, Dinalva A.
Riffel, Rogério
Riffel, Rogemar A.
author_sort Dors Junior, Oli L.
title Optical and mid-infrared neon abundance determinations in star-forming regions
title_short Optical and mid-infrared neon abundance determinations in star-forming regions
title_full Optical and mid-infrared neon abundance determinations in star-forming regions
title_fullStr Optical and mid-infrared neon abundance determinations in star-forming regions
title_full_unstemmed Optical and mid-infrared neon abundance determinations in star-forming regions
title_sort optical and mid-infrared neon abundance determinations in star-forming regions
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85522
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bdutipo_str Repositorios
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