Microwave detection of interstellar deuterated ammonia

Details Microwave detection of interstellar deuterated ammonia Microwave detection of interstellar deuterated ammonia

Jan 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...219l..43t&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 219, Jan. 1, 1978, p. L43-L47.

Astronomy and Astrophysics

Astronomy

21

Abundance, Ammonia, Deuterium Compounds, Hydrogen Clouds, Interstellar Matter, Hydrocyanic Acid, Interstellar Chemistry, Molecular Excitation, Molecular Spectra, Radio Astronomy

Scientific paper

Singly deuterated ammonia (NH2D) has been detected in the molecular cloud Sgr B2 by means of its 1(11)-1(01) transition at 85926.2 MHz. The apparent abundance ratio NH2D/NH3 is about 0.017 in Sgr B2, higher than the DCN/HCN ratio by a factor of about 20, but lower than the NH2D/NH3 ratio in Ori A by a factor of about 3. Our NH2D results indicate a highly specific deuteration process, the possible nature of which is discussed.

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