The extent and power of ‘maintenance mode’ feedback in MaNGA AGN

We study the ionised gas kinematics of 293 Active Galactic Nuclei (AGN) hosts as compared to that of 485 control galaxies from the MaNGA-SDSS survey using measurements of the [OIII]λ5007 emission-line profiles, presenting flux, velocity and W₈₀ maps. In 45% of the AGN, a broad component was needed to fit the line profiles wings within the inner few kpc, that we have identified with an outflow. But in most AGN, the profiles are broader than that of their controls over a much more extended region, identified as the "kinematically disturbed regions" (KDRs). We find a positive correlation between the mean W₈₀ and L[OIII], supporting that the KDR is due to heating and turbulence of the ISM by outflows and radiation from the AGN. The extent RKDR reaches up to 24kpc, with a mean ratio to that of the ENLR of 57%. We estimate ionised gas mass flow rates (Ṁₒᵤₜ) and kinetic powers (Ėₒᵤₜ) both from the AGN broad components and from the W₈₀ values, that can be obtained for the whole AGN sample. We find values for Ṁₒᵤₜ and Ėₒᵤₜ that correlate with the AGN luminosity Lbol, populating the low luminosity end of these known correlations. The mean coupling efficiency between Ėₒᵤₜ and AGN luminosity is ≈ 0.02% from the W₈₀ values and lower from the broad component. But the large extent of the KDR shows that even low-luminosity AGN can impact the host galaxy along several kpc in a "maintenance mode" feedback.