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dc.contributor.author
Carvalho, S.P.
dc.contributor.author
Dors, O. L.
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Cardaci, Monica Viviana
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Hägele, Guillermo Federico
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Krabbe, Nora Cristina
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Pérez Montero, E.
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Monteiro, A.F.
dc.contributor.author
Armah, M.
dc.contributor.author
Freitas Lemes, P.
dc.date.available
2021-10-18T16:53:49Z
dc.date.issued
2020-06
dc.identifier.citation
Carvalho, S.P.; Dors, O. L.; Cardaci, Monica Viviana; Hägele, Guillermo Federico; Krabbe, Nora Cristina; et al.; Chemical abundances of Seyfert 2 AGNs, II: N2 metallicity calibration based on SDSS; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 492; 4; 6-2020; 5675-5683
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/144111
dc.description.abstract
We present a semi-empirical calibration between the metallicity (Z) of Seyfert 2 active galactic nuclei and the N2 = log([N II]λ6584/H a) emission-line intensity ratio. This calibration was derived through the [OIII]λ5007/[O II]λ3727 versus N2 diagram containing observational data and photoionization model results obtained with the CLOUDY code. The observational sample consists of 463 confirmed Seyfert 2 nuclei (redshift z ≤ 0.4) taken from the Sloan Digital Sky Survey DR7 data set. The obtained Z-N2 relation is valid for the range 0.3 ≤ (Z/Z⊙) ≤ 2.0 that corresponds to -0.7 ≤ (N2) ≤ 0.6. The effects of varying the ionization parameter (U), electron density and the slope of the spectral energy distribution on the Z estimations are of the order of the uncertainty produced by the error measurements of N2. This result indicates the large reliability of our Z -N2 calibration. A relation between U and the [OIII]/[O II] line ratio, almost independent of other nebular parameter, was obtained.
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: ACTIVE
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GALAXIES: EVOLUTION
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GALAXIES: FORMATION
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GALAXIES: ISM
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GALAXIES: NUCLEI
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GALAXIES: SEYFERT
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Chemical abundances of Seyfert 2 AGNs, II: N2 metallicity calibration based on SDSS
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-08-17T15:53:24Z
dc.journal.volume
492
dc.journal.number
4
dc.journal.pagination
5675-5683
dc.journal.pais
Reino Unido
dc.description.fil
Fil: Carvalho, S.P.. Universidade Do Vale Do Paraiba; Brasil
dc.description.fil
Fil: Dors, O. L.. Universidade Do Vale Do Paraiba; Brasil
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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, Guillermo Federico. 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: Krabbe, Nora Cristina. Universidade Do Vale Do Paraiba; Brasil
dc.description.fil
Fil: Pérez Montero, E.. Instituto de Astrofísica de Andalucía; España
dc.description.fil
Fil: Monteiro, A.F.. Universidade Do Vale Do Paraiba; Brasil
dc.description.fil
Fil: Armah, M.. Universidade Do Vale Do Paraiba; Brasil
dc.description.fil
Fil: Freitas Lemes, P.. Universidade Do Vale Do Paraiba; Brasil
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/STAA193
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/492/4/5675/5721533?redirectedFrom=fulltext
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