Table 2
Main spectroscopic properties of the SiO lines.
| Transition | Frequency [MHz] | Eup/kb [K] | Aul [s−1] |
|---|---|---|---|
| J = 2−1 | 86846.985 | 6.3 | 2.93 × 10−5 |
| J = 5−1 | 217104.919 | 31.3 | 5.20 × 10−4 |
Notes. Spectroscopic data and parameters from Müller et al. (2013) and available in the Cologne Database for Molecular Spectroscopy molecular line catalogue (CDMS; Endres et al. 2016). Eup/kb is the energy of the upper state in Kelvin, kb the Boltzmann constant, and Aul is the Einstein coefficient for spontaneous emission in s−1.
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