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Fig. 6


N2D+ and N2H+ spectra observed at IRAM and APEX. The APEX spectra are Hanning smoothed. The velocity resolution is approximately 0.07 km s-1 for the N2D+(2−1) and N2D+(4−3) spectra and approximately 0.1 km s-1 for the higher frequency spectra. Gaussian fits to the hyperfine components of the N2D+(2−1) and N2D+(4−3) lines are shown as orange curves.

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