Surface brightness profile of the brightest cluster galaxy in Abell 85.

Surface brightness profile of the brightest cluster galaxy in Abell 85. The top panel presents the light emanating from that galaxy in the inner 6 kiloparsecs. The new Gemini data show a light excess, visible as a bump in the very center of the profile. In contrast, earlier observations (black) had suggested a light deficit at the core, but this is an artifact of their lower resolution.