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Table A.1

CH+ (1 ← 0), 13CH+ (1 ← 0), and SH+ (1 ← 0) absorption line analysis results.

CH+ (1 ← 0) 13CH+ (1 ← 0) SH+ (1,2,5/2 ← 0,1,3/2)

υ0 Δυ ± συ) τ0 ± σ(τ0) Va υ0 Δυ ± συ) τ0 ± σ(τ0) Va υ0 Δυ ± συ) τ0 ± σ(τ0) Va
(km s-1) (km s-1) (km s-1) (km s-1) (km s-1) (km s-1)

DR21(OH)
–10.8  ± 0.3 6.9  ± 0.5 9.1 (–2)  ± 4 (–3) U –2.4  ± 0.1 3.7  ± 0.1 2.3 (–1)  ± 6 (–3) C –2.6  ± 0.1 2.0  ± 0.4 1.8 (–1)  ± 3 (–2) C
20.2  ± 1.8 7.0  ± 2.4 4.7 (–2)  ± 1 (–2) U 3.4  ± 0.2 5.1  ± 0.4 5.6 (–2)  ± 4 (–3) C 10.6  ± 1.2 5.2  ± 2.7 2.2 (–2)  ± 2 (–2) U
10.1  ± 0.4 6.6  ± 0.7 8.2 (–2)  ± 4 (–3) C

G34
1.8  ± 0.1 5.0  ± 0.1 4.6 (–1)  ± 9 (–3) C 25.0  ± 0.3 4.8  ± 0.7 5.1 (–2)  ± 6 (–3) C 27.5  ± 0.3 3.8  ± 0.6 6.2 (–2)  ± 2 (–2) C
9.2  ± 0.1 4.6  ± 0.2 7.3 (–1)  ± 1 (–2) C 31.3  ± 0.3 3.5  ± 0.7 4.2 (–2)  ± 7 (–3) C 49.4  ± 0.8 7.3  ± 2.4 3.3 (–2)  ± 2 (–2) U
12.2  ± 0.3 2.2  ± 0.9 1.8 (–1)  ± 2 (–1) U 38.8  ± 0.4 1.7  ± 0.8 2.4 (–2)  ± 1 (–2) U 60.4  ± 0.1 2.2  ± 0.3 1.1 (–1)  ± 3 (–2) C
14.5  ± 0.5 3.7  ± 1.6 3.6 (–1)  ± 9 (–2) U 42.1  ± 0.2 1.9  ± 0.4 5.2 (–2)  ± 9 (–3) C
18.5  ± 0.6 4.7  ± 0.9 3.2 (–1)  ± 4 (–2) C 49.8  ± 0.2 6.2  ± 0.4 1.1 (–1)  ± 6 (–3) C
24.8  ± 0.2 4.2  ± 0.5 9.5 (–1)  ± 5 (–2) C 55.1  ± 0.1 3.5  ± 0.3 1.2 (–1)  ± 8 (–3) C
27.7  ± 0.2 2.7  ± 0.4 7.1 (–1)  ± 2 (–1) C 59.8  ± 0.1 2.8  ± 0.2 1.7 (–1)  ± 9 (–3) C
30.2  ± 0.2 4.0  ± 0.2 1.3 (+0)  ± 8 (–2) C 62.9  ± 0.1 2.3  ± 0.2 9.9 (–2)  ± 9 (–3) C
39.8  ± 0.3 4.8  ± 0.3 6.0 (–1)  ± 4 (–2) C
42.0  ± 0.0 2.3  ± 0.2 5.9 (–1)  ± 8 (–2) C
61.3  ± 0.0 1.9  ± 0.1 7.1 (–1)  ± 3 (–2) C
63.9  ± 0.1 3.5  ± 0.1 6.5 (–1)  ± 1 (–2) C

W31C
–9.9  ± 0.1 5.0  ± 0.2 1.4 (–1)  ± 4 (–3) C –1.5  ± 0.1 3.5  ± 0.2 8.2 (–2)  ± 5 (–3) C 18.1  ± 0.4 4.2  ± 1.0 2.7 (–2)  ± 7 (–3) C
–1.8  ± 0.8 3.7  ± 0.6 5.8 (–1)  ± 3 (–1) U 8.3  ± 0.2 5.9  ± 0.4 9.1 (–2)  ± 4 (–3) C 22.6  ± 0.2 2.8  ± 0.4 5.8 (–2)  ± 1 (–2) C
0.0  ± 0.2 2.8  ± 0.5 7.2 (–1)  ± 4 (–1) U 18.1  ± 0.2 6.8  ± 0.5 1.4 (–1)  ± 5 (–3) C 27.7  ± 0.5 4.6  ± 1.3 4.5 (–2)  ± 8 (–3) C
1.7  ± 0.1 1.3  ± 0.2 2.9 (–1)  ± 8 (–2) U 23.1  ± 0.4 4.2  ± 0.8 3.4 (–2)  ± 7 (–3) C 32.9  ± 0.4 4.4  ± 1.3 4.5 (–2)  ± 8 (–3) C
55.2  ± 1.6 4.9  ± 1.6 7.6 (–2)  ± 3 (–2) C 28.0  ± 0.2 5.7  ± 0.4 1.5 (–1)  ± 5 (–3) C 38.3  ± 0.4 3.1  ± 1.0 5.4 (–2)  ± 1 (–2) C
57.8  ± 0.2 3.1  ± 0.4 1.8 (–1)  ± 6 (–2) C 33.1  ± 0.1 4.1  ± 0.2 1.6 (–1)  ± 7 (–3) C 41.0  ± 0.3 2.2  ± 0.5 5.1 (–2)  ± 3 (–2) U
38.5  ± 0.1 3.9  ± 0.3 4.2 (–1)  ± 1 (–2) C
42.1  ± 0.2 3.2  ± 0.6 1.8 (–1)  ± 2 (–2) C
46.0  ± 0.2 3.7  ± 0.3 1.7 (–1)  ± 9 (–3) C

W33A
2.5  ± 0.1 5.2  ± 0.2 2.8 (–1)  ± 1 (–2) C 20.9  ± 0.8 4.7  ± 1.3 4.2 (–2)  ± 1 (–2) C 21.5  ± 0.2 2.4  ± 0.5 4.9 (–2)  ± 1 (–2) C
10.1  ± 1.2 8.6  ± 4.9 3.5 (–2)  ± 5 (–3) U 24.1  ± 0.1 1.3  ± 0.1 1.4 (–1)  ± 1 (–2) C 30.6  ± 1.0 2.7  ± 1.4 8.6 (–2)  ± 7 (–2) U
16.4  ± 0.5 2.1  ± 0.6 2.4 (–1)  ± 6 (–2) C 28.9  ± 0.2 5.0  ± 0.4 1.9 (–1)  ± 7 (–3) C 32.9  ± 0.9 2.4  ± 1.1 8.7 (–2)  ± 9 (–2) U
17.8  ± 0.3 1.5  ± 0.4 1.4 (–1)  ± 1 (–1) U 33.2  ± 0.2 2.7  ± 0.5 1.4 (–1)  ± 1 (–2) C 38.0  ± 0.3 2.1  ± 0.7 3.6 (–2)  ± 2 (–2) U
36.5  ± 0.2 2.3  ± 0.6 7.0 (–2)  ± 1 (–2) C 41.6  ± 0.2 3.4  ± 0.3 8.9 (–2)  ± 1 (–2) C
40.9  ± 0.1 4.6  ± 0.3 1.6 (–1)  ± 6 (–3) C

W49N
 − 3.4 ± 0.1 4.1  ± 0.2 1.9 (–1)  ± 6 (–3) C 9.9  ± 0.1 6.2  ± 0.3 1.3 (–1)  ± 7 (–3) C 10.0  ± 1.0 6.3  ± 2.0 1.8 (–2)  ± 2 (–2) U
1.6  ± 0.1 2.8  ± 0.2 2.0 (–1)  ± 9 (–3) C 13.0  ± 0.1 4.1  ± 0.2 2.3 (–1)  ± 7 (–3) C 12.8  ± 0.1 4.0  ± 0.2 2.2 (–1)  ± 1 (–2) C
22.9  ± 0.8 4.8  ± 0.7 9.9 (–1)  ± 8 (–1) U 16.5  ± 0.1 2.9  ± 0.2 8.8 (–2)  ± 1 (–2) C 16.1  ± 0.2 4.0  ± 0.5 7.2 (–2)  ± 2 (–2) C
27.8  ± 0.5 6.5  ± 4.1 1.7 (+0)  ± 3 (–1) U 23.3  ± 1.2 9.9  ± 2.3 2.5 (–2)  ± 3 (–3) U 23.3  ± 0.6 5.8  ± 1.3 2.6 (–2)  ± 7 (–3) U
34.3  ± 0.3 5.2  ± 1.6 4.0 (+0)  ± 4 (–1) U 34.5  ± 0.2 5.1  ± 0.4 7.5 (–2)  ± 7 (–3) C 32.9  ± 0.5 5.4  ± 1.0 2.7 (–2)  ± 7 (–3) C
40.0  ± 0.4 4.6  ± 1.0 2.7 (+0)  ± 4 (–1) C 39.5  ± 0.2 4.1  ± 0.4 4.7 (–2)  ± 4 (–3) C 40.2  ± 0.4 5.5  ± 0.8 3.1 (–2)  ± 7 (–3) C
45.5  ± 0.3 5.8  ± 0.9 2.1 (+0)  ± 9 (–2) C 44.6  ± 0.9 7.3  ± 1.8 5.2 (–2)  ± 4 (–3) C 51.5  ± 0.3 4.0  ± 0.6 3.4 (–2)  ± 8 (–3) C
51.1  ± 0.2 4.1  ± 0.2 1.1 (+0)  ± 1 (–1) C 51.3  ± 0.4 5.8  ± 0.9 2.6 (–2)  ± 4 (–3) C 61.6  ± 0.2 4.7  ± 0.3 6.5 (–2)  ± 8 (–3) C
74.7  ± 0.1 4.1  ± 0.2 1.1 (–1)  ± 6 (–3) C 57.7  ± 0.3 6.0  ± 0.6 7.2 (–2)  ± 9 (–3) C 68.6  ± 0.8 5.2  ± 1.6 1.5 (–2)  ± 7 (–3) U
63.4  ± 0.3 5.7  ± 0.5 9.5 (–2)  ± 5 (–3) C
68.4  ± 0.2 3.6  ± 0.4 5.5 (–2)  ± 6 (–3) C

W51
1.0  ± 0.1 2.3  ± 0.1 1.8 (–1)  ± 9 (–3) C 41.1  ± 0.7 7.2  ± 1.6 2.4 (–2)  ± 5 (–3) U 47.9  ± 0.2 4.5  ± 0.6 5.1 (–2)  ± 1 (–2) C
5.8  ± 0.8 3.7  ± 0.7 5.0 (–1)  ± 2 (–1) C 49.3  ± 0.1 1.0  ± 0.2 5.9 (–2)  ± 1 (–2) C 55.5  ± 0.2 2.5  ± 0.4 5.6 (–2)  ± 2 (–2) C
8.3  ± 0.4 3.2  ± 0.4 6.7 (–1)  ± 2 (–1) C 54.5  ± 0.1 4.6  ± 0.3 1.3 (–1)  ± 6 (–3) C 64.8  ± 0.1 2.0  ± 0.3 6.4 (–2)  ± 2 (–2) C
12.7  ± 0.1 3.7  ± 0.4 2.4 (–1)  ± 8 (–3) C 64.9  ± 0.3 3.7  ± 0.4 1.3 (–1)  ± 2 (–2) C
17.8  ± 0.2 3.3  ± 0.5 1.1 (–1)  ± 8 (–3) C 69.0  ± 0.6 5.2  ± 1.0 8.9 (–2)  ± 9 (–3) C
23.4  ± 0.1 5.2  ± 0.4 3.6 (–1)  ± 7 (–3) C
28.9  ± 1.2 4.7  ± 1.9 3.3 (–2)  ± 1 (–2) U
39.9  ± 0.1 3.5  ± 0.2 1.8 (–1)  ± 7 (–3) C
48.1  ± 0.7 6.2  ± 0.7 1.1 (+0)  ± 2 (–1) C
49.5  ± 0.1 2.4  ± 0.3 8.8 (–1)  ± 2 (–1) C
54.4  ± 0.2 5.8  ± 0.4 2.0 (+0)  ± 1 (–1) C
59.5  ± 0.1 1.9  ± 0.2 2.5 (–1)  ± 3 (–2) C
70.3  ± 0.1 2.1  ± 0.4 2.7 (–1)  ± 1 (–1) U
72.2  ± 0.5 3.7  ± 0.6 3.5 (–1)  ± 5 (–2) C

SgrA*+50
–204.4  ± 0.5 8.9  ± 1.1 1.1 (–1)  ± 1 (–2) C –157.9  ± 0.4 6.4  ± 0.9 1.0 (–1)  ± 1 (–2) C –136.9  ± 0.2 9.4  ± 0.5 3.2 (–1)  ± 3 (–2) C
–191.0  ± 0.4 6.7  ± 1.0 1.3 (–1)  ± 2 (–2) C –147.4  ± 0.2 2.1  ± 0.5 1.3 (–1)  ± 3 (–2) C –126.0  ± 0.3 3.8  ± 0.6 1.6 (–1)  ± 5 (–2) C
–169.8  ± 0.9 20.1  ± 1.6 7.3 (–1)  ± 2 (–2) C –138.3  ± 0.9 7.5  ± 1.5 2.0 (–1)  ± 2 (–2) C –114.6  ± 0.4 4.5  ± 0.9 1.1 (–1)  ± 4 (–2) C
–155.5  ± 0.3 11.4  ± 0.8 1.2 (+0)  ± 7 (–2) C –130.3  ± 0.8 7.3  ± 1.7 2.0 (–1)  ± 3 (–2) C –106.5  ± 0.4 3.6  ± 0.8 1.1 (–1)  ± 4 (–2) C
–147.9  ± 0.1 3.0  ± 0.2 1.2 (+0)  ± 8 (–2) C –115.0  ± 2.7 22.7  ±  10.5 6.7 (–2)  ± 8 (–3) U –97.0  ± 0.3 2.4  ± 0.6 1.2 (–1)  ± 6 (–2) U
–117.4  ± 0.4 5.8  ± 0.7 1.8 (+0)  ± 1 (–1) C –100.7  ± 0.7 6.9  ± 2.4 7.4 (–2)  ± 2 (–2) U –67.0  ± 0.6 4.8  ± 1.4 8.4 (–2)  ± 4 (–2) U
–110.9  ± 0.5 5.0  ± 1.2 2.3 (+0)  ± 3 (–1) C –66.0  ± 1.1 4.4  ± 2.5 3.3 (–2)  ± 2 (–2) U –54.4  ± 0.5 4.5  ± 1.1 9.1 (–2)  ± 4 (–2) U
–105.1  ± 0.8 5.5  ± 1.8 1.4 (+0)  ± 4 (–1) C –53.7  ± 0.7 8.8  ± 1.6 7.8 (–2)  ± 1 (–2) C –35.2  ± 0.3 3.0  ± 0.7 1.1 (–1)  ± 5 (–2) U
–98.9  ± 0.5 3.3  ± 1.1 7.0 (–1)  ± 2 (–1) C –32.0  ± 0.6 9.0  ± 1.4 8.9 (–2)  ± 1 (–2) C –24.2  ± 0.3 2.6  ± 0.8 9.5 (–2)  ± 5 (–2) U
–96.2  ± 2.1 19.5  ± 3.1 1.3 (+0)  ± 1 (–1) C –19.4  ± 0.5 4.7  ± 1.0 8.3 (–2)  ± 2 (–2) C  −7.9 ± 1.0 9.0  ± 2.2 6.3 (–2)  ± 3 (–2) U
–78.7  ± 0.4 5.2  ± 1.3 1.8 (–1)  ± 5 (–2) C –4.7  ± 0.3 6.3  ± 0.7 1.8 (–1)  ± 2 (–2) C 16.4  ± 2.1 11.7  ± 4.2 8.3 (–2)  ± 3 (–2) U
–68.7  ± 0.4 14.0  ± 1.3 4.6 (–1)  ± 2 (–2) C 9.4  ± 2.5 10.4  ± 4.9 9.1 (–2)  ± 2 (–2) U 23.9  ± 0.5 4.5  ± 1.3 1.6 (–1)  ± 9 (–2) U
–53.4  ± 0.1 6.8  ± 0.2 2.3 (+0)  ± 9 (–2) C 14.2  ± 0.4 2.1  ± 1.1 8.1 (–2)  ± 4 (–2) U 31.8  ± 0.5 8.9  ± 1.7 2.4 (–1)  ± 4 (–2) C
–46.4  ± 0.2 2.2  ± 0.6 2.5 (–1)  ± 7 (–2) C 20.1  ± 1.6 9.0  ± 4.5 1.1 (–1)  ± 2 (–2) U 42.9  ± 0.2 6.5  ± 0.5 5.3 (–1)  ± 5 (–2) C
–41.2  ± 0.3 9.3  ± 1.0 7.3 (–1)  ± 2 (–2) C 27.0  ± 0.3 2.3  ± 0.9 9.4 (–2)  ± 3 (–2) U 52.8  ± 0.2 6.7  ± 0.8 3.2 (–1)  ± 4 (–2) C
–28.9  ± 0.2 7.5  ± 0.6 1.1 (+0)  ± 3 (–2) C 34.9  ± 0.6 10.6  ± 2.6 1.3 (–1)  ± 1 (–2) C 60.2  ± 0.4 3.9  ± 0.9 1.5 (–1)  ± 5 (–2) C
–20.2  ± 0.4 6.1  ± 0.9 1.6 (+0)  ± 7 (–2) C 45.3  ± 0.4 5.5  ± 1.4 1.5 (–1)  ± 2 (–2) C
–15.7  ± 0.3 3.6  ± 0.3 1.3 (+0)  ± 3 (–1) C 51.4  ± 0.4 3.7  ± 0.9 1.4 (–1)  ± 2 (–2) C
15.3  ± 0.2 4.1  ± 0.3 1.8 (+0)  ± 3 (–1) C 57.7  ± 0.4 3.9  ± 0.9 9.7 (–2)  ± 2 (–2) C
20.7  ± 0.8 7.9  ± 3.2 9.7 (–1)  ± 4 (–1) U
28.9  ± 0.3 3.1  ± 1.1 7.1 (–1)  ± 3 (–1) U
34.9  ± 1.6 17.2  ± 6.0 1.8 (+0)  ± 4 (–1) U
49.4  ± 5.6 18.2  ± 4.4 7.9 (–1)  ± 5 (–1) U
69.1  ± 0.5 3.9  ± 1.2 8.0 (–2)  ± 2 (–2) C

SgrB2(N)
–102.0  ± 0.3 3.6  ± 0.7 3.3 (–2)  ± 5 (–3) C –117.0  ± 1.4 14.4  ± 1.4 8.4 (–2)  ± 3 (–2) C
–91.5  ± 0.9 18.0  ± 1.3 1.6 (–1)  ± 8 (–3) C –106.0  ± 0.3 6.3  ± 1.2 6.4 (–2)  ± 4 (–2) U
–76.0  ± 0.8 14.1  ± 3.4 1.1 (–1)  ± 1 (–2) C –92.2  ±  10.6 23.0  ±  29.7 7.8 (–2)  ± 4 (–2) U
–67.2  ± 0.8 7.0  ± 2.6 3.2 (–2)  ± 2 (–2) U –84.9  ± 1.3 7.6  ± 3.2 8.5 (–2)  ± 2 (–1) U
–54.8  ± 1.1 12.4  ± 2.3 7.4 (–2)  ± 1 (–2) C –77.0  ± 0.4 8.4  ± 1.6 1.9 (–1)  ± 2 (–1) U
–39.4  ± 2.9 15.5  ± 4.7 1.6 (–1)  ± 1 (–1) U –68.1  ± 0.7 8.6  ± 1.3 1.6 (–1)  ± 6 (–2) C
–26.9  ± 0.8 8.4  ± 4.6 4.9 (–2)  ± 8 (–2) U –58.3  ± 0.2 5.8  ± 0.6 7.7 (–2)  ± 1 (–2) C
–13.9  ±  10.5 26.5  ±  56.9 1.4 (–1)  ± 3 (–2) U –44.3  ± 0.6 15.8  ± 1.7 1.0 (–1)  ± 5 (–3) C
0.2  ± 6.7 11.9  ±  16.8 1.3 (–1)  ± 4 (–1) U –29.1  ± 0.7 10.8  ± 1.5 1.8 (–1)  ± 3 (–2) C
5.7  ± 0.8 7.3  ± 2.7 1.2 (–1)  ± 2 (–1) U –20.0  ± 0.5 9.2  ± 1.2 1.9 (–1)  ± 5 (–2) C
27.4  ± 1.0 10.6  ± 2.9 1.1 (–1)  ± 1 (–1) U –7.2  ± 0.2 10.8  ± 0.6 4.3 (–1)  ± 1 (–2) C
55.1  ± 2.4 31.1  ± 6.1 3.9 (–2)  ± 2 (–3) C 3.5  ± 0.1 8.8  ± 0.3 6.6 (–1)  ± 3 (–2) C
65.7  ± 0.2 7.7  ± 0.6 8.5 (–2)  ± 8 (–3) C 15.3  ± 0.1 10.6  ± 0.2 8.7 (–1)  ± 1 (–2) C
78.3  ± 0.4 8.1  ± 1.6 3.2 (–2)  ± 7 (–3) C 27.8  ± 0.2 8.2  ± 0.5 2.3 (–1)  ± 2 (–2) C
38.3  ± 0.4 11.1  ± 1.9 1.1 (–1)  ± 9 (–3) C
54.8  ± 0.6 13.3  ± 1.0 6.0 (–1)  ± 7 (–2) C
65.8  ± 0.5 11.8  ± 1.1 5.0 (–1)  ± 1 (–1) C
79.0  ± 0.4 13.8  ± 0.6 3.7 (–1)  ± 2 (–2) C
91.9  ± 0.2 4.3  ± 0.7 3.6 (–2)  ± 9 (–3) C

Notes. 

(a)

Validity of the Gaussian detection: C = confirmed if Δυ > 3συ) and τ0 > 2.5σ(τ0); U = uncertain otherwise.

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