Table 2
Molecular emission lines detected in Betelgeuse, sorted by increasing frequency and spectral window.
| Quantum numbers | Rest freq. | Lower state | ||
| Vibrat. | Rotat. | (GHz) | energy (cm-1) | |
|
|
||||
| 28SiO | ν= 7 | 8−7 | 330.47753 | 8397.36 |
| 13CO | ν= 0 | 3−2 | 330.58797 | 11.03 |
|
|
||||
| 30SiO | ν= 3 | 8−7 | 331.95548 | 3648.27 |
| 28Si17O | ν= 1 | 8−7 | 332.02199 | 1245.27 |
| 28SiO | ν= 6 | 8−7 | 332.87874 | 7238.86 |
|
|
||||
| 28SiO | ν= 2 | 8−7 | 342.50438 | 2487.33 |
| 12CO | ν= 1 | 3−2 | 342.64764 | 2154.70 |
| 29SiO | ν= 0 | 8−7 | 342.98085 | 40.05 |
|
|
||||
| 28SiO | ν= 1 | 8−7 | 344.91633 | 1269.89 |
| 12CO | ν= 0 | 3−2 | 345.79599 | 11.54 |
Notes. The rest frequencies are taken from the CDMS database (Müller et al. 2005; Endres et al. 2016).