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We present deep optical integral-field spectroscopic observations of thenearby (z ~ 0.01) brightest cluster galaxy NGC 4696 in the core of theCentaurus Cluster, made with the Wide Field Spectrograph (WiFeS) on the ANU2.3m telescope at Siding Spring Observatory. We investigate the morphology,kinematics, and excitation of the emission-line filaments and discuss these inthe context of a model of a minor merger. We suggest that the emission-linefilaments in this object have their origin in the accretion of a gas-richgalaxy and that they are excited by v ~100-200 km/s shocks driven into the coolfilament gas by the ram pressure of the transonic passage of the merging systemthrough the hot halo gas of NGC 4696.

Optical IFU Observations of the Brightest Cluster Galaxy NGC 4696: The Case for a Minor Merger and Shock-excited Filaments