Fig. A.1

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Comparison between the spatial distribution of the CO emission and the continuum emission. Left: spatial distribution of the median continuum flux in the region with CO gas emission (4.36–5.2 µm). Middle: spatial distribution of the median of the peak fluxes of the CO gas emission lines. Right: ratio of the left two panels showing a constant ratio in the upper surface, but a higher ratio in the lower surface due to missing CO flux.

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