The High-velocity System: Infall of a Giant Low-surface-brightness Galaxy toward the Center of the Perseus Cluster

http://adsabs.harvard.edu/abs/2015ApJ...814..101Y

Figure 6. Channel maps for the main body (upper set of panels) and secondary body (lower set of panels). The heliocentric velocity of each channel is indicated. Notice the similar overall morphology of the main and secondary bodies in each panel separated by 120 km s−1. The cross in each panel marks the approximate geometrical center of the main body of the HVS. The white rectangle in the lower set of panels corresponds to the region where an outflow associated with the AGN in NGC 1275 is detected; this outflow produces a relatively strong and very broad component in the red wing of the [N ii]λ6583 Å line from NGC 1275, thus obscuring any line emission associated with the secondary body of the HVS. The angular resolution of the maps is 27 at FWHM.