Mrk 766 V unsharp mask-subtracted residual image. Overplotted is the V – IC map (the levels range from 0.9 to 1.15 with a step of 0.05 mag arcsec-2; solid) and the V ellipticity maximum. Note the outer pseudo-ring, the blue region oriented NW–SE, and the blue protrusion to the NE.
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