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Transition frequencies were reported by
(1) A. L. Cooksy, C. A. Gottlieb, T. C. Killian, P. Thaddeus,
N. A. Patel, K. H. Young, and M. C. McCarthy,
2015, Astrophys. J. Suppl. Ser. 216, Art. No. 30.
The uncertainties of the centimeter data from (1) appear to be too
conservative and were reduced. Transition frequencies with calculated
uncertainties exceeding 0.1 MHz should be viewed with caution.
The vibrational energy was taken from
(2) F. J. Mazzotti, R. Raghunandan, A. M. Esmail, M. Tulej,
and J. P. Maier,
2011, J. Chem. Phys. 134, Art. No. 164303.
The dipole moment was assumed to be the same as in the
X 2Σ+ ground vibrational state,
see e049503.cat. This assumption may be reasonable.
The partition function of the main species takes into account all
states presently available in the CDMS. It is converged fairly well up
to about 150 K. Vibrational contributions to the
partition function are also available. These should be viewed
cautiously because of several estimates concerning vibrational
energies.
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