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Table 2
Properties of the lines targeted by the CALYPSO survey.
| Line | Frequency(a) | Eup (a) | log10(Aij)(a) | ncr (b) |
|---|---|---|---|---|
| (MHz) | (K) | (s−1) | (cm−3) | |
| CO (2−1) | 230 538.000 | 16.6 | − 6.2 | 7.3 × 103 |
| SO (56−45) | 219 949.442 | 35.0 | − 3.9 | 7.7 × 105 |
| SiO (5−4) | 217 104.980 | 31.3 | − 3.3 | 1.6 × 106 |
Notes. (a) Molecular parameters from the CDMS database (Müller et al. 2001). (b)The critical densities are computed at T = 100 K, using collisional rate coefficients from Yang et al. (2010) (CO), Lique et al. (2006) (SO), and Balança et al. (2018) (SiO).
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