Panel a: integrated intensity image (NOEMA+30 m) of the 13CO 1 → 0 line. Contour levels are 15 (≈150 ×σ), 20, and 25 K km s-1. Crosses indicate the positions of B1b-N and S. The blue and red contours correspond to the blue and red lobes of the B1b-N and S bipolar outflows as traced by the H2CO emission published by Gerin et al. (2015). The beam is plotted in the left bottom corner. Panel b: the same as a) for the C18O 1 → 0 line. Contour levels are 4 (≈40 ×σ), 5, 6, 7, 7.5, 8, and 8.5 km s-1. Panel c: the same as a) for the SO 32→ 21 line. Contour levels are 1 (≈10 ×σ) to 8 in steps of 0.5 K km s-1. Panel d: the same as a) for the integrated intensity of all the hyperfine components of the NH2D 11,1a→ 10,1s line. Contour levels are 1 (≈10 ×σ) to 8 in steps of 0.5 K km s-1. Panel e: I(NH2D)/I(SO) integrated intensity ratio (ratio between the images in panels d and c). The spectra toward the positions labeled in this panel are shown in Fig. A.1.
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