Deuterium hyperfine structure in interstellar C3HD.
The deuterium nuclear quadrupole hyperfine structure of the transition 1(10)-1(01) of the ring molecule cyclopropenylidene-d1 (C3HD) has been observed in emission from interstellar molecular clouds.  The narrowest linewidths (approximately 7 kHz) so far observed are in the cloud L1498.  The derived D coupling constants Xzz = 186.9(1.4) kHz, eta=0.063(18) agree well with correlations based on other molecules.
Bell
M B
MB
Herzberg Institute of Astrophysics, National Research Council of Canada, Ottawa, Ontario.
Watson
J K
JK
Feldman
P A
PA
Matthews
H E
HE
Madden
S C
SC
Irvine
W M
WM
D055580:Astronomical Phenomena; D001256:Astronomy; D003903:Deuterium / Q000032:analysis / Q000737:chemistry*; D005118:Extraterrestrial Environment; D006838:Hydrocarbons / Q000032:analysis*; D017550:Spectroscopy, Fourier Transform Infrared
D006838:Hydrocarbons; D003903:Deuterium