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Fig. A.2


Molecular outflows observed in SiO(5–4) compared with their CO(2–1) emission in the central region (a and b, Z2 and Z3 fields of Fig. 3a) and in the south-western region (c). The SiO line is integrated over 43− 93 km s−1 (continuous blue contours) and 103−153 km s−1 (continuous red contours), with contours of 6, 11, 18 to 198 by steps of 15 (a and b) and 6, 11, 18, 28 (c), in units of σSiO = 23 mJy beam−1 km s−1. The CO line is integrated over 21−64 km s−1 (dotted blue contours), with contours 7, 15, 30 to 270 by steps of 40 (a and b) and 5, 12, 20, 30 (c), in units of σCO,B= 32 mJy beam−1 km s−1. It is integrated over 128−158 km s−1 (dotted red contours), with contours of 7, 15, 30 to 280 by steps of 50 (a and b) and 5, 15, 30, 45 (c), in units of σCO,R= 22 mJy beam−1 km s−1. Contours are overlaid on the 1.3 mm continuum emission of the 12-m array (gray scale). Green ellipses locate the W43-MM1 cores, arrows (sometimes broken) indicate the direction of their outflows, dashed lines outline the best-developed outflow cavities.

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