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Fig. 17

image

Time evolution of the integrated intensities of HC15N, C+, C and NH3 (see the corresponding transition in Table 5). The reference model mHII is represented in black, model mHHMC in blue and model mHMC in green and the new HII region model in red. The red dashed line represents the detectability threshold of 5×10−2 K km s−1 obtained with an assumed rms noise of 3 mK.

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