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Fig. A.1


Zoom-in spectra of the line wings of 12CO 3–2 (black) and 12CO 10–9 (magenta) overplotted for each source. The spectra are multiplied by a constant factor indicated in the figure in order to show the line wings in more detail. They have been rebinned to 0.6–1 km s-1, to enhance signal-to-noise.

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