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As part of the QUADROS project to quantify the impact of AGN-driven outflowsin rapidly evolving galaxies in the local universe, we present observations of8 nearby ULIRGs ($0.04 < z < 0.2$) taken with the ISIS spectrograph on the\textit{William Herschel Telescope} (WHT), and also summarise the results ofthe project as a whole. Consistent with \cite{Rose2018}, we find that theoutflow regions are compact (0.08 < $R_{[OIII]}$ < 1.5 kpc), and the electrondensities measured using the [SII], [OII] trans-auroral emission-line ratiosare relatively high (2.5 < log n$_{e}$(cm$^{-3}$) < 4.5, median logn$_{e}$(cm$^{-3})\sim 3.1$). Many of the outflow regions are also significantlyreddened (median E(B-V) $\sim$ 0.5). Assuming that the de-projected outflowvelocities are represented by the 5$\rm^{th}$ percentile velocities ($v_{05}$)of the broad, blueshifted components of [OIII]$\lambda$5007, we calculaterelatively modest mass outflow rates ($0.1 < \dot{M} < 20$ M$_{\odot}$yr$^{-1}$, median $\dot{M}$ $\sim$ 2 M$_{\odot}$ yr$^{-1}$), and find kineticpowers as a fraction of the AGN bolometric luminosity ($\dot{F} =\dot{E}/L_{bol}$) in the range 0.02 < $\dot{F}$ < 3 \%, median $\dot{F}$ $\sim$0.3 \%). The latter estimates are in line with the predictions of multi-stageoutflow models, or single-stage models in which only a modest fraction of theinitial kinetic power of the inner disk winds is transferred to thelarger-scale outflows. Considering the QUADROS sample as a whole, we find noclear evidence for correlations between the properties of the outflows and thebolometric luminosities of the AGN, albeit based on a sample that covers arelatively small range in $L_{bol}$. Overall, our results suggest that there isa significant intrinsic scatter in outflow properties of ULIRGs for a given AGNluminosity.

Quantifying the AGN-driven outflows in ULIRGs (QUADROS) III: Measurements of the radii and kinetic powers of 8 near-nuclear outflows