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Fig. 13

image

Central nine spaxels in the observation of the ground state OH doublet at 119μm. The compass in the central spaxel shows the approximate orientation of the array on the sky. We note that, where detected, the absorption features are redshifted, and the emission features are blueshifted relative to the systemic velocity. Toward the southern spaxel (upper-left panel), both redshifted absorption and blueshifted emission are observed, showing an inverse P-Cygni profile.

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