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Fig. 1


Color-composite image of MACSJ0032-arc obtained using the HST/ACS F606W and F814W filters (left panel). The studied galaxy at zCO = 3.6314, strongly lensed by the galaxy cluster MACS J0032.1+1808, is composed of six multiple images well resolved in the HST image, labeled A, B, C, D, E, and F and encircled in white. They form a giant arc extending over 42.4′′. The right panels show, respectively, the zoom-in color-composite image obtained using the Spitzer/IRAC 3.6 and 4.5 μm bands over the multiple images B, C, D, E, and F (top) and the zoom-out color-composite image obtained using the Herschel/SPIRE 250, 350, and 500 μm bands; the white box represents a 40′′ × 40′′ area.

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