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We present a detailed analysis of the ionised gas distribution and kinematicsin the inner ~ 200 pc of NGC 4546, host of a Low Luminosity Active GalacticNucleus (LLAGN). Using GMOS-IFU observations, with a spectral coverage of4736-6806 A and an angular resolution of 0.7 arcsec, we confirm that thenuclear emission is consistent with photoionisation by an AGN, while the gas inthe circumnuclear region may be ionised by hot low-mass evolved stars. The gaskinematics in the central region of NGC 4546 presents three components: (i) adisc with major axis oriented along a position angle of 43deg +/- 3deg, counterrotating relative to the stellar disc; (ii) non-circular motions, evidenced byresidual velocities of up to 60 km/s, likely associated to a previous captureof a dwarf satellite by NGC 4546; and (iii) nuclear outflows in ionised gas,identified as a broad component (sigma ~ 320 km/s) in the line profiles, with amass outflow rate of dMout = 0.3 +/- 0.1 Msun/yr and a total mass of Mout =(9.2 +/- 0.8)E3 Msun in ionised gas, corresponding to less than 3 per cent ofthe total mass of ionised gas in the inner 200 pc of NGC 4546. The kineticefficiency of the outflow is roughly 0.1 per cent, which is smaller than theoutflow coupling efficiencies predicted by theoretical studies to AGN feedbackbecome efficient in suppressing star formation in the host galaxy.

IFU observations of the inner 200 pc of NGC 4546: gas rotation, non-circular motions and ionised outflows