205 citations · 1.5k across the 63 of their papers we have counts for
7 papers · 1 filter
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…
Determining star formation rates in AGN hosts from strong optical emission lines
Maitê S. Z. de Mellos, Rogemar A. Riffel, Jaderson S. Schimoia +11
The influence of Active Galactic Nuclei (AGN) on star formation within their host galaxies remains a topic of intense debate. One of the primary challenges in quantifying the star…
Spatially-resolved gas-phase metallicity in Seyfert galaxies
Mark Armah, Rogério Riffel, L. G. Dahmer-Hahn +7
We explore the relations between the gas-phase metallicity radial profiles (few hundred inner parsec) and multiple galaxy properties for 15 Seyfert galaxies from the AGNIFS (Active…
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…
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…
Chemical abundances of LINER galaxies -- Nitrogen abundance estimations
C. B. Oliveira, A. C. Krabbe, O. L. Dors +5
In this work, we investigated the nitrogen and oxygen abundances in a sample of galaxies with Low Ionization Nuclear Emission Regions (LINERs) in their nucleus. Optical spectroscop…