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The TMRT K band observations towards 26 infrared dark clouds: NH₃, CCS, and HC₃N

Duan, Yan; Li, Di; Liu, Tie +9 more

We present one of the first Shanghai Tian Ma Radio Telescope (TMRT) K Band observations towards a sample of 26 infrared dark clouds (IRDCs). We observed the (1,1), (2,2), (3,3), and (4,4) transitions of NH₃ together with CCS (2₁–>1₀) and HC₃N J = 2–1, simultaneously. The survey dramatically increases …