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Fig. 18


CO J = 18 − 17 emission (orange contours) superimposed on the H2 S(5) line map around SMM3 and SMM4, displaying the strong spatial correlation between the two molecular tracers. The positions of SMM3 and SMM4 are marked with filled yellow circles. Color encoding for the hydrogen map is as in Fig. 14 and levels for the carbon monoxide as in Figs. 6 and 7.

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