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Fig. 7
Total integrated 12CO and 13CO J = 3−2 emission in M 2–9 is shown in black, the emission integrated over the smaller ring is presented in red. Vertical red dotted lines are plotted at LSR velocities 80.65 (inner ring Vsys), 77.65, and 83.65 km s-1, and blue dotted lines at 80 (outer ring Vsys), 74, and 86 km s-1.
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