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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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