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The experimental lines are from
(1) Y. Hirahara, Y. Oshima, and Y. Endo,
1993, Astrophys. J. 408, L113; and from
(2) V. D. Gordon, M. C. Mc Carthy, A. J. Apponi, and P. Thaddeus,
2001, Astrophys. J. Suppl. Ser. 134, 311.
Extrapolations to frequencies much higher than 30 GHz should be viewed with some caution.
The dipole moment is from an ab initio calculation from
(3) G. Pascoli, H. Lavendy,
1998, Int. J. Mass Spectrom 181, 11.
Comparison of their results for C5S with results from
high level calculations suggest this value may be wrong by up to 0.5 D.
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