SiO(5–4)/SiO(1–0) intensity ratio (brightness temperature, TB, scale), derived where both emissions have an S/N ≥ 3. For this comparison, the SMA image has been smoothed to the angular resolution of the VLA image. The velocities affected by SiO(1–0) absorption (see Fig. 4) have not been taken into account: right and left panels are for the blue (+89,+105 km s-1) and red (+115, +130 km s-1) emission, respectively. Contour levels range from 0.5 to 2.0 by steps of 0.5. The sources of the G24.78+0.08 cluster are labelled following Furuya et al. (2002) and Beltrán et al. (2004, 2011).
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