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We present a two-dimensional study of the gas distribution, excitation andkinematics of the OH absorber galaxy IRAS 19154+2704 using Gemini GMOS-IFUobservations. Its continuum image shows a disturbed morphology indicative of apast or on-going interaction. The ionised gas emission presents two kinematiccomponents: a narrow ($\sigma\lesssim$300 km s$^{-1}$) component that may betracing the gas orbiting in the galaxy potential and a broad($\sigma\gtrsim$500 km s$^{-1}$) component which is produced by an ActiveGalactic Nucleus (AGN) driven outflow, with velocities reaching $-$500 kms$^{-1}$ which may exceed the escape velocity of the galaxy. The emission-lineratios and BPT diagrams confirm that the gas excitation in the inner $\sim$2kpc is mainly due the AGN, while in regions farther away, a contribution fromstar formation is observed. We estimate a mass outflow rate of $\dot{M}_{\rmout}=4.0\pm2.6$ M$_\odot$ yr$^{-1}$ at a distance of 850 pc from the nucleus.The corresponding outflow kinetic power $\dot{E}_{\rm out} =(2.5\pm1.6)\times10^{42}$ erg s$^{-1}$, is only $3\times10^{-4}$ L$_{\rm bol}$(the AGN luminosity), but the large mass-outflow rate, if kept for a $\sim$10Myr AGN lifecycle, will expel $\approx10^8$ M$_\odot$ in ionised gas alone.This is the 6th of a series of papers in which we have investigated thekinematics of ULIRGS, most of which are interacting galaxies showing OHMegamasers. IRAS19154 shows the strongest signatures of an active AGN,supporting an evolutionary scenario: interactions trigger AGN that fully appearin the most advanced stages of the interaction.

AGN driven outflows in the OH absorber galaxy IRAS 19154+2704