ALMA Band 7 continuum emission and H2O absorption. Top panel: ALMA band-7 continuum emission. Contours are in steps of 5 × (σ = 0.25 mJy beam−1). Centre panel: H2O 33,0 − 32,1 and H2O 42,3 − 41,4 absorption profiles for the northern (strongest) lensed image. The CO-derived redshift of the host galaxy is denoted by a vertical line. Bottom panel: H2O 33,0 − 32,1 and H2O 42,3 − 41,4 absorption profiles for the southeastern lensed image. The RMS noise level spectra are shown as shaded areas.
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