ALMA dust continuum (left) and [C II] (right) maps of J1342+0928. The 0.″28 × 0.″20 (1.41 kpc × 0.99 kpc) beam size is shown at the bottom left of each panel while the cross indicates the peak of the dust continuum emission, which is consistent with the near-infrared position of the quasar. The solid (dashed) lines represent the +(−)2, 4, 8×σ contours with σ = 7.7 μJy beam⁻¹ for the continuum flux density at 231 GHz (left panel) and σ = 35.0 μJy beam⁻¹ for the [C II] flux density (right panel). The black dotted circles mark the 1.″3 (6.5 kpc) radius aperture used to measure the total flux densities.