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Fig. 3

image

12CO J = 3−2a), 13CO J = 3−2b), HCO+J = 4−3c), and C18O J = 3−2d) spectra obtained toward the position of the MSXG52. The dashed line indicates the radio recombination line related to G52. The Gaussian used to fit the spectra is shown in red.

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