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Fig. 2.

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Exposure-map corrected image of the combined Chandra exposures in logarithmic scale. The green contours are isopleths from the r-band image (without the bright stars), ranging logarithmically from 600 to 2300 ADU (21.4–19.8 mag/arcsec2, see Sect. 4). 3 arcmin corresponds to 147 h 70 1 $ 147\,h_{70}^{-1}\, $kpc.

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