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Fig. 2.

Fig. 2. Refer to the following caption and surrounding text.

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2D Surface brightness map of the BCG+ICL of a cluster in TNG100, centred on the BCG, with an upper limit of R200. The black circle shows the divide between the ICL and the BCG. Light from the centre extends for hundreds of kiloparsecs and substructure is visible in the ICL.

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