J/MNRAS/468/L113ivo://CDS.VizieR/J/MNRAS/468/L113doi:10.26093/cds/vizier.74689113CDSDors O.L.JrArellano-Cordova K.Z.Cardaci M.V.Hagele G.F.2024-08-17T20:18:59Z2020-04-21T15:08:50ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frseyfert-galaxiesactive-galactic-nucleichemical-abundancesWe obtained new quantitative determinations of the nitrogen abundance and a consistent relation between the nitrogen and oxygen abundances for a sample of Seyfert 2 galaxies located at redshift z<0.1. We carried out this analysis using the CLOUDY code to build detailed photoionization models. We were able to reproduce observed optical narrow emission line intensities for 44 sources compiled from the literature. Our results show that Seyfert 2 nuclei have nitrogen abundances ranging from ~0.3 to ~7.5 times the solar value. We derived the relation log (N/H)=1.05(+/-0.09)x[log(O/H)]-0.35(+/-0.33). Results for N/O versus O/H abundance ratios derived for Seyfert 2 galaxies are in consonance with those recently derived for a sample of extragalactic disc HII regions with high metallicity.2017MNRAS.468L.113Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/468/L113CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/468/L113https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/468/L113http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/468/L113https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/468/L113https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/468/L113http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/468/L113GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/468/L113/table1 (Dereddened fluxes (relative to H{beta}=1.00) for a Seyfert 2 nuclei)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/468/L113/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/468/L113/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/468/L113/table1?GETtext/xml+votable180.050000true220.158741753.50451110.0055555555555555566/2229 4439 7446 7741 7869 7921 10348 10984 11416 11886 13120 13707 17529 17850 19130 19482 19619 21450 22654 23086 24750 25907 27767 28075 28593 30027 35284 35691 35717 36618 36733 38668 38704 38868 40221 42016 42027 42120 43339 43925 44660 45735 45883 46442 46811https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/468/L113?format=asciidefaultJ/MNRAS/468/L113/table1Dereddened fluxes (relative to H{beta}=1.00) for a Seyfert 2 nucleiSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObjectObject namemeta.id;meta.maincharF[OII]OObserved dereddened [OII]3726,3729 flux (relative to H{beta}=100)spect.line.intensity;arith.ratiofloatF[OII]MPredicted dereddened [OII]3726,3729 flux (relative to H{beta}=100) (1)phot.fluxfloatF[OIII]OObserved dereddened [OIII]5007 flux (relative to H{beta}=100)spect.line.intensity;arith.ratiofloatF[OIII]MPredicted dereddened [OIII]5007 flux (relative to H{beta}=100) (1)phot.flux;em.line.OIII;spect.linefloatF[NII]OObserved dereddened [NII]6584 flux (relative to H{beta}=100)spect.line.intensity;arith.ratiofloatF[NII]MPredicted dereddened [NII]6584 flux (relative to H{beta}=100) (1)phot.fluxfloatF[SII]OObserved dereddened [SII]7618+7631 flux (relative to H{beta}=100)spect.line.intensity;arith.ratiofloatF[SII]MPredicted dereddened [SII]7618+7631 flux (relative to H{beta}=100) (1)phot.fluxfloatzRedshift (from NED)src.redshiftfloatRefReferences (2)meta.refint_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/468/L113/table2Assumed model parameter values used to fit the emission lines observed in the 44 modeled Seyfert 2 nucleirecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObjectObject namemeta.id;meta.maincharlog(O/H)Abundance O/Hphys.abundfloatlog(N/H)Abundance N/Hphys.abundfloatlog(S/H)Abundance S/Hphys.abundfloatNeElectron densitycm**-3phys.density;phys.electronintlog[Q(H)]Number of ionizing photonsmeta.numberfloatalphaalpha index, for F{nu}{prop.to}{nu}^{alpha}^spect.indexfloat