Analysis of the SiO line blue- and red-shifted emissions towards the corresponding emission peaks of the SiO(1–0) map (see text), as observed with VLA and SMA (convolved to the angular resolution of the VLA image). The solutions for the observed SiO(1–0) and SiO(5–4) brightness temperatures at the typical red- (+116 km s-1) and blue-shifted (+106 km s-1) velocities are shown in the nH2–N(SiO) plane for non-LTE (RADEX) plane-parallel models at the labelled kinetic temperatures. The SiO(1–0) brightness temperatures are 4.7 K (+116 km s-1) and 6.1 K (+106 km s-1), while the SiO(5–4) brightness temperatures are 1.1 K (+116 km s-1) and 2.9 K (+106 km s-1). Dashed lines are for the uncertainties.
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