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Fig. 14.

image

Cartoon illustration for Mkn 848. The blue ellipses and black and yellow stars represent the galaxies and the central SMBHs, respectively, with the near edge-on orientation for the SE system and the almost face-on configuration of the NW galaxy. The cyan and grey areas refer to the tidal arms and the dust observed in the HST images. The extended and tenuous yellow area indicates the regions associated with AGN-ionisation: in the SE system, we observe an extended NLR close to the plane of the sky; in the NW, the almost-face configuration suggests that the NLR axis is close to the LOS. The clouds indicate outflows and distinguish between ionised (yellow contour) and atomic (brown contour) gas, as well as between receding (red filled) and approaching (blue filled) material. Clouds visualise outflow directions, phases, and positions inferred from our analysis and do not refer to the (unknown) internal structure of the biconical outflows. The collected information suggest AGN-driven biconical outflows in the two merging galaxies.

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