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Table 2

Parameters of the detected DCO+, SiO, and DCN in the IRDCs.

Core Velocity Δ V(DCO+) TMB(DCO+) Δ V(SiO) TMB(SiO) Δ V(DCN) TMB(DCN)
km s-1 km s-1 K km s-1 K km s-1 K

G31-1 95.53 ± 0.56 3.40 ± 1.51 0.050 ± 0.028 11.06 ± 0.56 0.209 ± 0.030 6.23 ± 0.63 0.106 ± 0.026
G34-1 58.84 ± 0.13 1.88 ± 0.39 0.183 ± 0.037 10.50 ± 0.45 0.343 ± 0.040 4.47 ± 0.34 0.306 ± 0.036
G34-2 57.47 ± 0.14 3.24 ± 0.32 0.193 ± 0.033 9.46 ± 0.51 0.308 ± 0.038 4.99 ± 0.37 0.195 ± 0.032
G34-3 59.92 ± 0.15 1.58 ± 0.38 0.120 ± 0.031 17.49 ± 1.32 0.160 ± 0.037 11.68 ± 2.95 0.038 ± 0.030
G38-1 42.91 ± 0.07 1.92 ± 0.18 0.366 ± 0.041 5.01 ± 1.29 0.075 ± 0.043
G53-1 22.60 ± 0.17 2.02 ± 0.30 0.406 ± 0.113 12.54 ± 1.37 0.171 ± 0.064 5.73 ± 0.83 0.181 ± 0.052

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