Four low-N (≤ 2), low energy MW transition frequencies
are from astronomical observations by
(1) R. Fuentetaja, C. Cabezas, Y. Endo, M. Agúndez,
A. Godard Palluet, F. Lique, B. Tercero, N. Marcelino,
P. de Vicente, and J. Cernicharo,
2025, Astron. Astrophys. 702, Art. No. A23.
Spectroscopic parameter were extrapolated from CCS, C13CS,
and CC34S, except for B.
Transition frequencies with J = N and N – 1
should be viewed with great caution, higher-N
transitions with some additional caution.
The dipole moment is assumed to agree with that of the
main isotopolog, see e056002.cat.
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