Molecular outflows observed in SiO(5–4) compared with their CO(2–1) emission in the central region (a, Z1 field ofFig. 3a) and in the surrounding of core #67 (b). 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 5, 10, 20 (in b), 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 5, 12, 19 (b), in units of σCO,B= 32 mJy beam−1 km s−1; and 128−158 km s−1 (dotted red contours), with contours of 7, 15, 30 to 280 by steps of 50 (a) and 5, 15, 30, 45 (b), 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. Knots of the molecular outflow of core #8 arelabelled B1 to B7.
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