Molecular line emission images of the inner 40′′ (1.6 pc) at a resolution of about 0.7′′× 0.6′′. Top row (from left to right): CS(5–4), with 250 GHz contours as in Fig. 2, HC3N(27–26), and H13CO+(3–2). Bottom row (from left to right): SiO(6–5), SO(7–6), and C2H(3–2). The contours show the CS(5–4) emission at the levels of [4, 8, 12, 18, 24, 30, 36, 48, 60, 72, 84] ×σ (=0.08 Jy beam-1 km s-1) for comparison (see also Fig. A.4). Zooms into the inner 20′′, the triop (15′′ northwest of Sgr A*), and the SEW clumps (15′′ south(east) of Sgr A*) can be found in Figs. A.8 and A.7, A.5, and A.6, respectively.
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