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Galaxy gas kinematics are sensitive to the physical processes that contributeto a galaxy's evolution. It is expected that external processes will cause moresignificant kinematic disturbances in the outer regions, while internalprocesses will cause more disturbances for the inner regions. Using a subsampleof 47 galaxies ($0.27<z<0.36$) from the Middle Ages Galaxy Properties withIntegral Field Spectroscopy (MAGPI) survey, we conduct a study into the sourceof kinematic disturbances by measuring the asymmetry present in the ionised gasline-of-sight velocity maps at the $0.5R_e$ (inner regions) and $1.5R_e$ (outerregions) elliptical annuli. By comparing the inner and outer kinematicasymmetries, we aim to better understand what physical processes are drivingthe asymmetries in galaxies. We find the local environment plays a role inkinematic disturbance, in agreement with other integral field spectroscopystudies of the local universe, with most asymmetric systems being in closeproximity to a more massive neighbour. We do not find evidence suggesting thathosting an Active Galactic Nucleus (AGN) contributes to asymmetry within theinner regions, with some caveats due to emission line modelling. In contrast toprevious studies, we do not find evidence that processes leading to asymmetryalso enhance star formation in MAGPI galaxies. Finally, we find a weakanti-correlation between stellar mass and asymmetry (ie. high stellar massgalaxies are less asymmetric). We conclude by discussing possible sourcesdriving the asymmetry in the ionised gas, such as disturbances being present inthe colder gas phase (either molecular or atomic) prior to the gas beingionised, and non-axisymmetric features (e.g., a bar) being present in thegalactic disk. Our results highlight the complex interplay between ionised gaskinematic disturbances and physical processes involved in galaxy evolution.

The MAGPI Survey: Drivers of kinematic asymmetries in the ionised gas of $z\sim0.3$ star-forming galaxies