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Table 2:

Total column densities, N, and abundances with respect to hydrogen, X.

Species x 		Na X = $N_x/N_{\rm H}$
  ( cm-2)  

NH 		1.5 $\times$ 1014 5.6 $\times$ 10-9
NH2 8.0 $\times$ 1013 3.0 $\times$ 10-9
NH3 8.7 $\times$ 1013 3.2 $\times$ 10-9
NH+ ${\la} 2 \times 10^{13}$ ${\la} 8 \times 10^{-10}$

Notes. (a) Calculated in the velocity interval 11-54 km s-1.


Source LaTeX | All tables | In the text

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