Evidence of a large-scale component in the external halo of NGC 3311. A), B) V-band image and residual from the Sérsic n = 10 model from Arnaboldi et al. (2012) illustrate the presence of an off-centred envelope. C) X-rays image from Hayakawa et al. (2006) indicates an excess emission at the same position of the off-centred envelope. Red circles indicate the position of dwarf galaxies from the catalogue of Misgeld et al. (2008).
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