New metallicity calibration for Seyfert 2 galaxies based on the N2O2 index

C. S. Castro, O. L. Dors, M. V. Cardaci +1

We derive a new relation between the metallicity of Seyfert 2 Active Galactic Nuclei (AGNs) and the intensity of the narrow emission-lines ratio $N2O2$=log([N II]$\lambda$6584/[O II]$\lambda$3…