Identifying AGNs from X-ray Detections: Primary Parameter Calibrations

Tue, 24 Mar 2026 00:00:00 +0000

Traditional strong-line diagnostics often struggle in Active Galactic Nuclei due to complex radiation fields. In this foundational first paper of our series on identifying AGNs from X-ray detections, we developed new metallicity calibrations (such as $\rm N_2$ and $\rm O_3N_2$) that directly account for these structural nebular variations.

By explicitly parameterizing our models using the intrinsic 2-10 keV X-ray luminosity, we successfully decoupled true gas-phase chemical abundances from the intense AGN radiation field, allowing for highly accurate measurements without relying on temperature-dependent optical limitations.

Metallicity Calibration |

Identifying AGNs from X-ray Detections: Primary Parameter Calibrations