Interstellar deuterated ammonia : From NH 3 to ND 3


We use spectra and maps of NH2D, ND2H, and ND3, obtained with the CSO, IRAM 30m and Arecibo telescopes, to study deuteration processes in dense cores. The data include the first detection of the hyperfine structure in ND2H. The emission of NH2D and ND3 does not seem to peak at the positions of the embedded protostars, but instead at offset positions, where… (More)


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