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Table 11

Dynamic structures within IRDC clumps.

Component Properites Tracer

Quiescent envelope ΔV< 3 km s-1 at systemic V HO, N2H+, NH3a, C17Ob
Envelope ΔV from 3 to 7 km s-1 at systemic V CH3OH, C34S, CCH, C17Ob
Infall ΔV from 3 to 7 km s-1 redshifted V H2O absorption
Outflow ΔV> 7 km s-1at systemic velocity H2O emission

Notes.

(b)

C17O is broader than 3 km s-1 for the NH3 positions.

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