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Fig. 3


Top panel: Lyman-α extended emission (green contours) associated with the multiple images (red circles) of family 11. The cyan lines show the tangential critical curves at the redshift of family 11 (z = 3.0358). A galaxy very close angularly and in redshift (z = 3.0339), but singly imaged, is indicated with a magenta circle. Bottom panel: red and magenta lines show, respectively, the stacked spectrum of the multiple images of family 11, corrected for the magnification factor and shifted upwards by a factor of + 25 (flux units are 10-20 erg s-1 cm-2 Å-1), and the spectrum of the singly imaged galaxy. The green line shows the extended Lyman-α continuum-subtracted (to reduce the contamination from ICL) emission, extracted from the innermost green apertures. The magenta and green spectra have been rescaled by arbitrary factors for better visualization. The gray region represents the rescaled variance obtained from the data reduction pipeline.

This figure is made of several images, please see below:

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