Metallicity of Active Galactic Nuclei from ultraviolet and optical emission lines-II. Revisiting the $C43$ metallicity calibration and its implications

O. L. Dors, C. B. Oliveira, M. V. Cardaci +7

In this study, a new semi-empirical calibration is proposed between ultraviolet emission lines (\ion{C}{iii}]$\lambda 1909$, \ion{C}{iv}$\lambda 1549$, \ion{He}{ii}]$\lambda 1640$) of…