Contour map of the C18O(2–1) integrated emission (main-beam brightness scale) overlaid on the Ks SOFI image. Contour levels are from 0.4 K km s-1 to 2.4 K km s-1 in steps of 0.4 K km s-1. SEST HPBW at the C18O(2–1) frequency is indicated in the upper right. The positional offsets are in arcminutes from NX Pup indicated with a filled circle.
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