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Fig. 4


Map of the APEX CO 2−1 emission (velocity resolution 2 km s-1) around IRAS 17163, with the star at (0, 0). The grey background ring shows the location and extent of the 25 dust ring. Most of the CO emission is found inside this dust ring. Note also the dashed red lines that mark 70 km s-1, dividing the blue and red components of the emission profile. These components are spatially separated, with the blue component peaking around (10, 0) and the red component around (–10, 0). The equivalent map for CO 3−2 is shown in Appendix A.

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