Table 10
Derived physical parameters for acetaldehyde, propanal, and butanal toward the G+0.693-0.027 molecular cloud.
| Molecule | N (×1013 cm−2) | Trot (K) | Vlsr (km s−1) | ∆V (km s−1) | Abundance(a) (×10−10) | Ref. |
|---|---|---|---|---|---|---|
| CH3CHO | 50 ± 1 | 9.4 ± 0.1 | 69.5 ± 0.1 | 21.0 ± 0.3 | 37 | (1) |
| s-C2H5CHO | 7.4 ± 1.5 | 12.0 ± 0.8 | 69 | 21 | 5 ± 2 | (2) |
| ct-n-C3H7 CHO(b) | <0.8 | 12 | 69 | 21 | <0.6 | (1) |
| cg-n-C3H7CHO(b) | <0.5 | 12 | 69 | 21 | <0.4 | (1) |
| g-i-C3H7CHO(b) | <1.6 | 12 | 69 | 21 | <1.2 | (1) |
Notes. (a)We adopted NH2 = 1.35 × 1023 cm−2 from Martín et al. (2008). (b)For n-butanal, the two conformers were modeled as independent species without applying a conformer correction. For i-butanal, the gauche conformer is considered as an independent species, and its column density corresponds to the column density of this conformer.
References. (1) This work; (2) Requena-Torres et al. (2008); Rivilla et al. (2020)
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