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Fig. 8.

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Spatially resolved properties of the galactic ionised outflow in the Teacup. Top-left: mass outflow rate map, obtained from the outflow (second plus third) modelled component(s) of Hα. Top-right: radial profiles of mass outflow rate (top), kinetic rate (middle), and momentum rate (bottom) as a function of distance from the nucleus, from Hα (red and orange) and [O III] (blue and light blue) outflow components. These quantities were obtained by summing up the single-spaxel values (calculated through Eqs. (3), (5), and (6)) contained in each radial bin, and re-scaling by ΔRRradbin, being ΔRradbin the radial bin width (=1 kpc) and ΔR the spaxel size. Orange and light blue points mark those external radial bins for which we adopted a single median gas density, since no density measurement was available (see Sect. 4 for details). A different symbol is used for the innermost radial bin, which comprises a few spaxels whose outflow density could not be constrained (see Sect. 4). Lighter error bars are used when the assigned statistical uncertainties were estimated from representative regions instead of on a spaxel basis (see Sect. 4). The vertical dashed lines mark the distance of the handle. On the rightmost y axis, we also report mass-loading factor (top), coupling efficiency (middle), and momentum boost (bottom) of the outflow, for which we consider SFR ∼ 10 M and Lbol ∼ 5 × 1045 erg s−1 (see text). Mid-left: radial profiles of ionised outflow mass, from the flux of the outflow component(s) of Hα and [O III]. Bottom: radial profiles of outflow velocity (left; vout = v2 + 3 + FWHM2 + 3/2 ≃ 1.18σ2 + 3), combination of velocity, v2 + 3 (centre), and velocity dispersion, σ2 + 3 (right), of second plus third modelled components, for both [O III] and Hα. The reported values are the flux-weighted (by the outflow component(s)) averages in each radial bin. We stress that the reported error bars are not statistical errors, but are a combination of the statistical errors and the standard deviation of the values, to show the extent of variation of the velocities in each radial bin.

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