Establishing the impact of powerful AGN on their host galaxies
  Establishing the role of active galactic nuclei (AGN) during the formation of
galaxies remains one of the greatest challenges of galaxy formation theory.
Towards addressing this, we summarise our recent work investigating: (1) the
physical drivers of ionised outflows and (2) observational signatures of the
impact by jets/outflows on star formation and molecular gas content in AGN host
galaxies. We confirm a connection between radio emission and extreme ionised
gas kinematics in AGN hosts. Emission-line selected AGN are significantly more
likely to exhibit ionised outflows (as traced by the [O III] emission line) if
the projected linear extent of the radio emission is confined within the
spectroscopic aperture. Follow-up high resolution radio observations and
integral field spectroscopy of 10 luminous Type 2 AGN reveal moderate power,
young (or frustrated) jets interacting with the interstellar medium. We find
that these sources live in highly star forming and gas rich galaxies.
Additionally, by combining ALMA-derived dust maps with integral field
spectroscopy for eight host galaxies of z~2 X-ray AGN, we show that H-alpha
emission is an unreliable tracer of star formation. For the five targets with
ionised outflows we find no dramatic in-situ shut down of the star formation.
Across both of these studies we find that if these AGN do have a negative
impact upon their host galaxies, it must be happening on small (unresolved)
spatial scales and/or an observable galaxy-wide impact has yet to occur.
