@article{b2700f829f284bda9e2f5c9604c353ca,
title = "Oxygen abundances in the narrow line regions of Seyfert galaxies and the metallicity-luminosity relation",
abstract = "We present oxygen abundances relative to hydrogen (O/H) in the narrow line regions (NLRs) gas phases of Seyferts 1 (Sy 1s) and Seyferts 2 (Sy 2s) active galactic nuclei (AGNs). We used fluxes of the optical narrow emission line intensities [3 500 < λ({\AA}) < 7 000] of 561 Seyfert nuclei in the local Universe (z ≲ 0.31) from the second catalogue and data release (DR2) of the BAT AGN Spectroscopic Survey, which focuses on the Swift-BAT hard X-ray (≳ 10 keV) detected AGNs. We derived O/H from relative intensities of the emission lines via the strong-line methods. We find that the AGN O/H abundances are related to their hosts stellar masses and that they follow a downward redshift evolution. The derived O/H together with the hard X-ray luminosity (LX) were used to study the X-ray luminosity-metallicity (LX-ZNLR) relation for the first time in Seyfert galaxies. In contrast to the broad-line focused (LX-ZBLR) studies, we find that the LX-ZNLR exhibit significant anticorrelations with the Eddington ratio (λEdd) and these correlations vary with redshifts. This result indicates that the low-luminous AGNs are more actively undergoing interstellar medium enrichment through star formation in comparison with the more luminous X-ray sources. Our results suggest that the AGN is somehow driving the galaxy chemical enrichment, as a result of the inflow of pristine gas that is diluting the metal rich gas, together with a recent cessation on the circumnuclear star-formation.",
keywords = "galaxies: ISM, galaxies: Seyfert, galaxies: abundances, galaxies: active, galaxies: evolution, galaxies: formation",
author = "Mark Armah and Rog{\'e}rio Riffel and Dors, {O. L.} and Kyuseok Oh and Koss, {Michael J.} and Claudio Ricci and Benny Trakhtenbrot and Mabel Valerdi and Riffel, {Rogemar A.} and Krabbe, {Angela C.}",
note = "Publisher Copyright: {\textcopyright} 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",
year = "2023",
month = apr,
day = "1",
doi = "10.1093/mnras/stad217",
language = "אנגלית",
volume = "520",
pages = "1687--1703",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",
}