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astro-ph.GA2024
Semi-empirical calibration of the oxygen abundance for LINER galaxies based on SDSS-IV MaNGA -- The case for strong and weak AGN
C. B. Oliveira, O. L. Dors, I. A. Zinchenko +5
In this paper, we present a semi-empirical calibration between the oxygen abundance and the emission-line ratio for Low Ionization Nuclear Emission Regions (LINERs). This rela…
astro-ph.GA2024
Empirical calibration for helium abundance determinations in Active Galactic Nuclei
O. L. Dors, G. C. Almeida, C. B. Oliveira +10
For the first time, a calibration between the HeI /H emission line ratio and the helium abundance =12+log(He/H) for Narrow line regions (NLRs) of Seyfert~2 Activ…
astro-ph.GA2024★ 1 cited
Direct estimates of nitrogen abundance for Seyfert 2 nuclei
O. L. Dors, M. V. Cardaci, G. F. Hägele +10
We derive the nitrogen and oxygen abundances in the Narrow Line Regions (NLRs) of a sample of 38 local () Seyfert~2 nuclei. For that, we consider narrow optical emis…