Metal Abundances of Intermediate-redshift Active Galactic Nuclei: Evidence for a Population of Lower-metallicity Seyfert 2 Galaxies at z = 0.3–0.4

Metal Abundances of Intermediate-redshift Active Galactic Nuclei: Evidence for a Population of Lower-metallicity Seyfert 2 Galaxies at z = 0.3–0.4

We derive oxygen abundances for two samples of Seyfert 2 (Sy2) active galactic nuclei (AGNs) selected from the KPNO International Spectroscopic Survey (KISS). The two samples from KISS include 17 intermediate-redshift (0.29 ≤ z ≤ 0.42) Sy2s detected via their [O iii ] lines, and 35 low-redshift ( z...

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Bibliographic Details
Main Authors: David J. Carr, John J. Salzer, Caryl Gronwall, Anna L. Williams
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:The Astrophysical Journal
Subjects:
Active galactic nuclei
Seyfert galaxies
Emission line galaxies
Chemical abundances
Cosmological evolution
Galaxies
Online Access:https://doi.org/10.3847/1538-4357/aced91

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