  Metallicity measurements in galaxies can give valuable clues about galaxy
evolution. One of the mechanisms postulated for metallicity redistribution in
galaxies is gas flows induced by AGN, but the details of this process remain
elusive. We report the discovery of a positive radial gradient in the gas-phase
metallicity of the narrow line region of the Seyfert 2 galaxy NGC 7130, which
is not found when considering the star-forming components in the galaxy disk.
To determine gas-phase metallicities for each kinematic component, we use both
active galactic nuclei (AGN) and star-forming (SF) strong-line abundance
relations, as well as BPT diagnostic diagrams. These relations involve
sensitive strong emission lines, namely [OIII]5007, [NII]6584, H$\alpha$,
H$\beta$, [SII]6716, and [SII]6731, observed with the adaptive-optics-assisted
mode of the Multi Unit Spectroscopic Explorer (MUSE) at the Very Large
Telescope (VLT). The presence of a positive radial metallicity gradient only in
the AGN ionized component suggests that metals may be transported from central
areas to its purlieus by AGN activity.
