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Large scale, weakly collimated outflows are very common in galaxies withlarge infrared luminosities. In complex systems in particular, where intensestar formation (SF) coexists with an active galactic nucleus (AGN), it is notclear yet from observations whether the SF, the AGN, or both are driving theseoutflows. Accreting supermassive black holes (SMBHs) are expected to influencetheir host galaxies through kinetic and radiative feedback processes, but in aSeyfert galaxy where the energy emitted in the nuclear region is comparable tothat of the body of the galaxy, it is possible that stellar activity is alsoplaying a key role in these processes. In order to achieve a betterunderstanding of the mechanisms driving the gas evolution specially at thenuclear regions of these galaxies, we have performed high-resolutionthree-dimensional hydrodynamical simulations with radiative cooling consideringthe feedback from both star formation regions including supernova (type I andII) explosions and an AGN jet emerging from the central region of the activespiral galaxy. We computed the gas mass lost by the system, separating the roleof each of these injection energy sources on the galaxy evolution and foundthat at scales within one kiloparsec an outflow can be generally establishedconsidering intense nuclear star formation only. The jet alone is unable todrive a massive gas outflow, although it can sporadically drag and accelerateclumps of the underlying outflow to very high velocities.

Gas outflows in Seyfert galaxies: effects of star formation versus AGN feedbacks