NASA NTRS · 19880044712
A study of C3HD in cold interstellar clouds
Abstract
The 1(10)-1(01) transition of C3HD was detected at 19.418 GHz at twelve positions in cold, dark clouds, and the D hyperfine components were resolved in two sources (L1498 and TMC-1C) well enough to derive values for the D quadrupole coupling constants. Simultaneous observations of C3H2 in each source yield relative integrated line intensities in the range 0.10-0.18, from which relative C3HD/C3H2 abundances in the range 0.05-0.15 were derived. These are among the highest deuteration ratios yet observed. Within the limits of the observational and modeling uncertainties, it is possible to explain the derived C3HD/C3H2 ratios by ion-molecule chemistry if e is equal to about 3 x 10 to the -7th.
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Bell, M. B., Avery, L. W., Matthews, H. E., Feldman, P. A., Watson, J. K. G.. 1988-03-15. A study of C3HD in cold interstellar clouds. https://ntrs.nasa.gov/citations/19880044712
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