Detection of doubly deuterated ammonia in L134N

Details Detection of doubly deuterated ammonia in L134N Detection of doubly deuterated ammonia in L134N

Feb 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...354l..63r&link_type=abstract

Astronomy and Astrophysics, v.354, p.L63-L66 (2000)

Astronomy and Astrophysics

Astrophysics

86

Ism: Individual Objects: L134N, Ism: Molecules

Scientific paper

ND_2H has been detected for the first time in the dense core of L134N, at the peak ammonia position. The abundance ratio [ND_2H]/[NH_2D] is 0.05, a slightly smaller value than the deuterium fractionation observed for ammonia [NH_2D]/[NH_3] ~ 0.1 (Tiné et al. \cite{Tine00}). This is the second doubly deuterated species detected so far in the interstellar medium, and the first one in a cold dense core. The chemical processes leading to the formation of a significant amount of doubly deuterated ammonia ND_2H need to be thorougly investigated.

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