Significance
NH has been reported in the diffuse interstellar medium but not in dense molecular clouds. The purpose for detecting NH is often to get a better estimate of the rotational constants and vibrational levels of NH. It is also needed in order to confirm theoretical data which predicts N and NH abundances in stars which produce N and NH and other stars with left over trace amounts of N and NH. Using current values for rotational constants and vibrations of NH as well as from OH and CH lets us study the CNO abundances without resorting to a full spectrum synthesis with a 3D model atmosphere.
Read more about this topic: Interstellar Nitrogen Monohydride
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