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1978•The Astrophysical JournalRequires access

Microwave detection of interstellar deuterated ammonia

B. E. Turner, B. Zuckerman, M. Morris, Patrick Palmer

Open publisher page 21 citations

Abstract

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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What this paper is about

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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OpenAlex reports 21 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

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.

Key concepts: Physics, Deuterium, Astrophysics, Molecular cloud, Interstellar cloud, Interstellar medium, Astrochemistry, Ammonia

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