Open Access
Table 6
Isotopie ratios in G328.2551-0.5321.
| Atoms | Molecules | Isotopie ratios | Adopted isotopie ratios | Isotopie ratios from the literature(a) | Galactic centre | |
|---|---|---|---|---|---|---|
| Line area | ratios | |||||
| 12C/13C | C18O/13C18O | 30–35 | – | 30 | 60 ± 25(b) | 24 (c) |
| C17O/13C17O | 40 | — | 30 | 60 ± 25(b) | — | |
| C34S/13C34S | 22 | 23 | 30 | 60 ± 25(b) | 22 (d) | |
| CH3OH/13CH3OH | – | 25 | 30 | 60 ± 25(b) | 22(e) | |
| 32S/34S> | 13CS/13C34S | 12 | 12 | 12 | 25 ± 6(f) | 18 (d) |
| SO/34SO | 8 | 12 | 12 | 32 ± 7(f) | — | |
| 34S/33S> | C34S/C33S | 3.8 | 3.7 | 3.7 | 6.3 ± 1.0(f) | 4.5 (d) |
Notes. (a)These values were calculated for a source located at 6.4 kpc from the Galactic centre using the Galactic gradient from the papers in this column. (b)Milam et al. (2005).(f)Chin et al. (1996). (c)Langer & Penzias (1990). (d)Humire et al. (2020).(e)Müller et al. (2016).
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