tokens: DK thanks Norbert Werner for a useful discussion about the links between the observed emission-line gas and the large-scale X-ray properties of NGC 5813. DK also thanks Michele Cappellari and Richard McDermid for comments on an early version of the paper. Based on observations made with ESO telescopes at the La Silla Paranal Observatory under programme ID 60.A-9100(A). RB acknowledges support from the ERC advanced grant 339659-MUSICOS.
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