Cluster of molecular outflows in the W43-MM1 massive protocluster. Contours of the integrated blue- and red-shifted emission of the CO(2–1) (a) and SiO(5–4) (b) line wings are overlaid on the 1.3 mm continuum emission of the 7 m array (gray scale, with a 5.3′′ beam and 10 mJy beam−1 rms). (a) The CO line is integrated over 42−85 km s−1 for blue lobes and 111−154 km s−1 for red lobes. Contours are 15, 35 to 235 by steps of 50 in units of σblue = 33 mJy beam−1 km s−1 and σred = 42 mJy beam−1 km s−1. (b) The SiO line is integrated over 43−93 km s−1 for blue lobes and 103−153 km s−1 for red lobes.Contours are 8, 18, 28 to 203 in units of σ = 23 mJy beam−1 km s−1. Ellipses in the lower-left corner represent the angular resolutions of each image, and a scale bar is shown on the top panel to indicate the size in physical units. Boxes outline the zooms-ins of Figs. 3, 4.
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