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Growing evidence in support of a connection between Active Galactic Nuclei(AGN) activity and the Ram-Pressure Stripping (RPS) phenomenon has been foundboth observationally and theoretically in the past decades. In this work, wefurther explore the impact of RPS on the AGN activity by estimating thegas-phase metallicity of nuclear regions and the mass-metallicity relation ofgalaxies at $z \leq$ 0.07 and with stellar masses $\log {\rm M}_* / {\rmM}_\odot \geq 9.0 $, either experiencing RPS or not. To measure oxygenabundances, we exploit Integral Field Spectroscopy data from the GASP and MaNGAsurveys, photoionization models generated with the code CLOUDY and the codeNebulabayes to compare models and observations. In particular, we build CLOUDYmodels to reproduce line ratios induced by photoionization from stars, AGN, ora contribution of both. We find that the distributions of metallicity and [OIII]$\lambda$5007 luminosity of galaxies undergoing RPS are similar to the onesof undisturbed galaxies. Independently of the RPS, we do not find a correlationbetween stellar mass and AGN metallicity in the mass range $\log {\rm M}_* /{\rm M}_\odot \geq 10.4$, while for the star-forming galaxies we observe thewell-known mass-metallicity relation (MZR) between $ 9.0 \leq \log \ {\rm M}_*/{\rm M}_\odot \leq 10.8$ with a scatter mainly driven by the star-formationrate (SFR) and a plateau around $\log {\rm M}_* / {\rm M}_\odot \sim 10.5$. Thegas-phase metallicity in the nuclei of AGN hosts is enhanced with respect tothose of SF galaxies by a factor of $\sim$ 0.05 dex regardless of the RPS.

Gas-phase metallicity of local AGN in the GASP and MaNGA surveys: the role of ram-pressure stripping