Fig. 4

Cutouts of source ID = 63327 in the U-band (left) and in the R-band (centre) by the LBC instrument. The cutout on the right shows the same sky area observed by HST in the I814W filter. The position of the spectroscopic redshift is indicated with a green circle. The size of the cutouts is 15 arcsec. In the HST image there is a faint blob towards the south-west, but it is blended with the galaxy at z ~ 3.33 in the LBC R-band. In the LBC U-band there is a very faint emission slightly offset towards the south w.r.t. the R-band position.
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