Fig. A.1.
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Left panels: 4"×4" ALMA Bands 3, 6, and 7 imaged with BRIGGS weighting (robust = 0.5) centred on the gravitationally lensed galaxy J154506 are shown from left to right. -4, -2, 2, 4, 8, 16, and 32 σ contours are shown with solid and dashed white lines for positive and negative values, respectively. Right panel: Band 7 contours (BRIGGS weighting, robust = 1.0) on top of the Band 3 data, for comparison purposes.
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