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Fig. 1.


Left panel: spectrum of spectral windows 1 + 2, including the CO(6-5) emission line and the continuum emission, extracted from the region included within the ≥2σ in the velocity-integrated map. Right panel: zoom onto the continuum-subtracted CO(6-5) spectrum. The red line shows a fit with a Gaussian function. Spectra are plotted at the maximum spectral resolution of the data (23.7 km s−1).

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