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Table 4
Derived physical parameters for the hydrocarbons analysed towards the G+0.693–0.027 molecular cloud.
| Name | Formula | N (×1013 cm−2) | Tex (K) | VLSR (km s−1) | FWHM (km s−1) | Abundance(a) (×10−10) | Ref. |
|---|---|---|---|---|---|---|---|
| Propene | CH2=CHCH3(C3H6) | 82±16 | 16 ± 4 | 69 | 20 | 60 | (1) |
| Isobutene | (CH3)2C=CH2 (C4H8) | 26±4 | 14± 9 | 69 | 20 | 19 | (1) |
| Propyne | CH3CCH (C3H4) | 170±2 | 19±1 | 69 | 20 | 126 | (2) |
| 1-butyne | C2H5CCH (C4H6) | <2.7 | 19 | 69 | 20 | <2 | (1) |
Notes. Values without uncertainties were fixed when performing the fit (see text). (a)We adopted 
, from Martín et al. (2008).
References. (1) This work; (2) Bizzocchi et al. (2020).
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