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Fig. 4.

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HST color images of gravitational arc systems with overlaid contours showing dust continuum emission observed with ACA at different σ levels (−5, −3, −2, 2, 3, 5). Dashed lines correspond to negative values while solid lines are positive values. The sizes of the synthesized beams are indicated in the bottom left corners of the images. Additionally, the large circles represent the ACA’s primary beam at a value of 0.5 for the respective target fields.

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