ALMA 1.1 mm image tapered at 0″60. The white circles have a diameter of 4 arcseconds and indicate the positions of the galaxies listed in Table 3. Black contours show the different slices (labeled A–F) used to compose the homogeneous 1.1 mm coverage, with a median rms-noise of 0.18 mJy per beam. Blue lines show the limits of the HST/ACS field and green lines indicate the HST-WFC3 deep region. The cyan contour represents the limit of the Dunlop et al. (2017) survey covering all the Hubble Ultra Deep Field region. All of the ALMA-survey field is encompassed by the Chandra deep field-South.