Gas-phase metallicity determinations in nearby AGNs with SDSS-IV MaNGA: evidence of metal-poor accretion

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dc.contributor.authorNascimento, Janaína Correa do
dc.contributor.authorDors Junior, Oli Luiz
dc.contributor.authorBergmann, Thaisa Storchi
dc.contributor.authorMallmann, Nícolas Dullius
dc.contributor.authorRiffel, Rogério
dc.contributor.authorIlha, Gabriele da Silva
dc.contributor.authorRiffel, Rogemar André
dc.contributor.authorRembold, Sandro Barboza
dc.contributor.authorDeconto-Machado, Alice
dc.contributor.authorCosta, Luiz N. da
dc.contributor.authorArmah, Mark
dc.date.accessioned2025-03-14T16:56:42Z
dc.date.available2025-03-14T16:56:42Z
dc.date.issued22022
dc.description.abstractWe derive the metallicity (traced by the O/H abundance) of the narrow-line region (NLR) of 108 Seyfert galaxies as well as radial metallicity gradients along their galaxy discs and of these of a matched control sample of no active galaxies. In view of that, observational data from the SDSS-IV MaNGA survey and strong emission-line calibrations taken from the literature were considered. The metallicity obtained for the NLRs was compared to the value derived from the extrapolation of the radial oxygen abundance gradient, obtained from H II region estimates along the galaxy disc, to the central part of the host galaxies. We find that, for most of the objects (∼ 80 per cent), the NLR metallicity is lower than the extrapolated value, with the average difference (D ) between these estimates ranging from 0.16 to 0.30 dex. We suggest that D is due to the accretion of metal-poor gas to the AGN that feeds the nuclear supermassive black hole (SMBH), which is drawn from a reservoir molecular and/or neutral hydrogen around the SMBH. Additionally, we look for correlations between D and the electron density (Ne), [O III]λ5007, and H α luminosities, extinction coefficient (AV) of the NLRs, as well as the stellar mass (M∗) of the host galaxies. Evidence of an inverse correlation between the D and the parameters Ne, M∗, and Av was found.
dc.description.physical15 p.
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.uriFAPESP (2019/14050-6) CNPq (311223/2020-6, 304927/2017-1, 400352/2016-8) CAPES (Proj. 0001)
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationUniversidade Federal de Santa Maria
dc.identifier.affiliationLaboratório Interinstitucional de e-Astronomia
dc.identifier.bibliographicCitationNASCIMENTO, Janaína Correa do et al. Gas-phase metallicity determinations in nearby AGNs with SDSS-IV MaNGA: evidence of metal-poor accretion. Monthly Notices of the Royal Astronomical Society, v. 513, n. 1, p. 807-821, 2022. Disponível em:
dc.identifier.doi10.1093/mnras/stac771
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/701
dc.language.isoen_US
dc.publisherRoyal Astronomical Society
dc.rights.holderMonthly Notices of the Royal Astronomical Society
dc.subject.keywordGalaxies: abundances
dc.subject.keywordGalaxies: active
dc.subject.keywordGalaxies: evolution
dc.titleGas-phase metallicity determinations in nearby AGNs with SDSS-IV MaNGA: evidence of metal-poor accretion
dc.typeArtigos de Periódicos

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