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dc.contributor.author
Castro, C.S.
dc.contributor.author
Dors, O.L.
dc.contributor.author
Cardaci, Monica Viviana
dc.contributor.author
Hägele, G.F.
dc.date.available
2018-03-28T17:38:22Z
dc.date.issued
2017-01
dc.identifier.citation
Castro, C.S.; Dors, O.L.; Cardaci, Monica Viviana; Hägele, G.F.; New metallicity calibration for Seyfert 2 galaxies based on the N2O2 index; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 467; 2; 1-2017; 1507-1514
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/40417
dc.description.abstract
We derive a new relation between the metallicity of Seyfert 2 active galactic nuclei (AGNs) and the intensity of the narrow emission-lines ratio N2O2 = log([N II] λ6584/[O II] λ3727). The calibration of this relation was performed by determining the metallicity (Z) of a sample of 58 AGNs through a diagram containing the observational data and the results of a grid of photoionization models obtained with the CLOUDY code. We find the new Z/Z⊙-N2O2 relation using the obtained metallicity values and the corresponding observational emissionline intensities for each object of the sample. Estimations derived through the use of this new calibration indicate that the narrow-line regions of Seyfert 2 galaxies exhibit a large range of metallicities (0.3 ≲ Z/Z⊙ ≲ 2.0), with a median value Z ≈ Z⊙. Regarding the possible existence of correlations between the luminosity L(Hβ), the electron density and the colour excess E(B-V) with themetallicity in this kind of objects, we do not find correlations between them.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Galaxies: Abundances
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Galaxies: Evolution
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Galaxies: Formation
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Galaxies: General
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Galaxies: Ism
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
New metallicity calibration for Seyfert 2 galaxies based on the N2O2 index
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-26T14:37:45Z
dc.journal.volume
467
dc.journal.number
2
dc.journal.pagination
1507-1514
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Castro, C.S.. Universidade Do Vale Do Paraíba; Brasil
dc.description.fil
Fil: Dors, O.L.. Universidade Do Vale Do Paraíba; Brasil
dc.description.fil
Fil: Cardaci, Monica Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
dc.description.fil
Fil: Hägele, G.F.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
dc.journal.title
Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stx150
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/467/2/1507/2931735
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