Chemical abundances in Seyfert galaxies – VII. Direct abundance determination of neon based on optical and infrared emission lines

For the first time, neon abundance has been derived in the narrow line region from a sample of Seyfert 2 nuclei. In view of this, we compiled from the literature fluxes of optical and infrared (IR) narrow emission lines for 35 Seyfert 2 nuclei in the local universe (z < ∼ 0.06). The relative...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Armah, Mark, Dors, Oli L., Aydar, C. P., Cardaci, Mónica Viviana, Hägele, Guillermo Federico, Feltre, Anna, Riffel, R. A., Riffel, Rogério, Krabbe, A. C.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2021
Materias:
Astronomía
galaxies: active
galaxies: abundances
galaxies: evolution
galaxies: nuclei
galaxies: ISM
galaxies: Seyfert
ISM: abundances
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/146744
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-146744
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: active
galaxies: abundances
galaxies: evolution
galaxies: nuclei
galaxies: ISM
galaxies: Seyfert
ISM: abundances
spellingShingle Astronomía
galaxies: active
galaxies: abundances
galaxies: evolution
galaxies: nuclei
galaxies: ISM
galaxies: Seyfert
ISM: abundances
Armah, Mark
Dors, Oli L.
Aydar, C. P.
Cardaci, Mónica Viviana
Hägele, Guillermo Federico
Feltre, Anna
Riffel, R. A.
Riffel, Rogério
Krabbe, A. C.
Chemical abundances in Seyfert galaxies – VII. Direct abundance determination of neon based on optical and infrared emission lines
topic_facet Astronomía
galaxies: active
galaxies: abundances
galaxies: evolution
galaxies: nuclei
galaxies: ISM
galaxies: Seyfert
ISM: abundances
description For the first time, neon abundance has been derived in the narrow line region from a sample of Seyfert 2 nuclei. In view of this, we compiled from the literature fluxes of optical and infrared (IR) narrow emission lines for 35 Seyfert 2 nuclei in the local universe (z < ∼ 0.06). The relative intensities of emission lines were used to derive the ionic and total neon and oxygen abundances through electron temperature estimations (Te-method). For the neon, abundance estimates were obtained by using both Te-method and IR-method. Based on photoionization model results, we found a lower electron temperature [te(Ne iii)] for the gas phase where the Ne2+ is located in comparison with t3 for the O2+ ion. We find that the differences (D) between Ne2+/H+ ionic abundances calculated from IR-method and Te−method (assuming t3 in the Ne2+/H+ derivation) are similar to the derivations in star-forming regions (SFs) and they are reduced by a mean factor of ∼ 3 when te(Ne iii) is considered. We propose a semiempirical Ionization Correction Factor (ICF) for the neon, based on [Ne ii]12.81µm, [Ne iii]15.56µm and oxygen ionic abundance ratios. We find that the average Ne/H abundance for the Seyfert 2s sample is nearly 2 times higher than similar estimate for SFs. Finally, for the very high metallicity regime (i.e. [12 + log(O/H) > ∼ 8.80]) an increase in Ne/O with O/H is found, which likely indicates secondary stellar production for the neon.
format Articulo
Preprint
author Armah, Mark
Dors, Oli L.
Aydar, C. P.
Cardaci, Mónica Viviana
Hägele, Guillermo Federico
Feltre, Anna
Riffel, R. A.
Riffel, Rogério
Krabbe, A. C.
author_facet Armah, Mark
Dors, Oli L.
Aydar, C. P.
Cardaci, Mónica Viviana
Hägele, Guillermo Federico
Feltre, Anna
Riffel, R. A.
Riffel, Rogério
Krabbe, A. C.
author_sort Armah, Mark
title Chemical abundances in Seyfert galaxies – VII. Direct abundance determination of neon based on optical and infrared emission lines
title_short Chemical abundances in Seyfert galaxies – VII. Direct abundance determination of neon based on optical and infrared emission lines
title_full Chemical abundances in Seyfert galaxies – VII. Direct abundance determination of neon based on optical and infrared emission lines
title_fullStr Chemical abundances in Seyfert galaxies – VII. Direct abundance determination of neon based on optical and infrared emission lines
title_full_unstemmed Chemical abundances in Seyfert galaxies – VII. Direct abundance determination of neon based on optical and infrared emission lines
title_sort chemical abundances in seyfert galaxies – vii. direct abundance determination of neon based on optical and infrared emission lines
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/146744
work_keys_str_mv AT armahmark chemicalabundancesinseyfertgalaxiesviidirectabundancedeterminationofneonbasedonopticalandinfraredemissionlines
AT dorsolil chemicalabundancesinseyfertgalaxiesviidirectabundancedeterminationofneonbasedonopticalandinfraredemissionlines
AT aydarcp chemicalabundancesinseyfertgalaxiesviidirectabundancedeterminationofneonbasedonopticalandinfraredemissionlines
AT cardacimonicaviviana chemicalabundancesinseyfertgalaxiesviidirectabundancedeterminationofneonbasedonopticalandinfraredemissionlines
AT hageleguillermofederico chemicalabundancesinseyfertgalaxiesviidirectabundancedeterminationofneonbasedonopticalandinfraredemissionlines
AT feltreanna chemicalabundancesinseyfertgalaxiesviidirectabundancedeterminationofneonbasedonopticalandinfraredemissionlines
AT riffelra chemicalabundancesinseyfertgalaxiesviidirectabundancedeterminationofneonbasedonopticalandinfraredemissionlines
AT riffelrogerio chemicalabundancesinseyfertgalaxiesviidirectabundancedeterminationofneonbasedonopticalandinfraredemissionlines
AT krabbeac chemicalabundancesinseyfertgalaxiesviidirectabundancedeterminationofneonbasedonopticalandinfraredemissionlines
bdutipo_str Repositorios
_version_ 1764820461591461888

Ejemplares similares