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Fig. 9.
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Spectra of APEX CO(2–1) and ALMA CO(1–0) (from Leroy et al. 2021a) integrated within a 35″ (2.3 kpc) radius aperture. The light red region showcases a 1σ error in the flux density, which mostly originates from the 10% calibration uncertainty of ALMA Band 6 data.
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