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Table 4
Column density ratios from the literature of carbon chain molecules with respect to methanol.
| Source | Source type | N(CH3CCH)/N(CH3OH) | N (c-C3H2)/N(CH3OH) |
|---|---|---|---|
| G331.51−0.103(a) | Hot molecular core | 0.42 ± 0.05 | – |
| G12.89+0.49(b) | Massive young stellar object |  |
– |
| G16.86−2.16(b) | Massive young stellar object |  |
– |
| G28.28−0.36(b) | Massive young stellar object |  |
– |
| Inner galaxy (c) | ATLASGAL high mass clumps, averaged | 0.31 | – |
| NGC 7538 IRS 9(d) | Organic-poor massive young stellar object | 1.3±0 4 | – |
| W3 IRS5(d) | Organic-poor massive young stellar object | 2.2±0 7 | – |
| AFGL 490(d) | Organic-poor massive young stellar object | 1.8±0 8 | – |
| Perseus molecular cloud(e) | Class 0/1 protostars | – | 0.009 ± 0.003-0.80±0.34 |
| L1527(e) | low-mass star-forming region | – | 0.60 ± 0.07 |
| IRAS 20126(f) | high-mass star-forming region | 0 99 | 0.06 |
| AFGL 2591(f) | high-mass star-forming region | 0 97 | 0.05 |
References. (a) Santos et al. (2022), (b)Taniguchi et al. (2018b), (c) Giannetti et al. (2017), as averaged in (a) (d) Fayolle et al. (2015), (e)Higuchi et al. (2018) and references therein, (f) this work.
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