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Fig. 3
Position-velocity diagram of the SiO(5−4) transition (SMA data) along the OF1 axis shown in Fig. 1. The vertical line marks the mm continuum peak, the horizontal line the ambient velocity (− 3.4 km s-1, Bronfman et al. 1996). Contours are from 2σ (0.2 Jy/beam) in steps of 4σ.
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