Fig. 7

SiO (5–4) spectra at the B1 position observed by IRAM 30 m telescope (thin solid line) and the SMA (dashed line). The cloud velocity is indicated by a thick vertical line (VLSR = 2.7 km s-1). The SMA observations were convolved to the 11′′ resolution to match the beam of the IRAM 30 m telescope. The spectral resolution is 1.3 km s-1 in both cases.
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