Table 5
Ranges of observed and detected Eu for each species in each source.
| Species | Eu,min (K) − Eu,max (K)a | |||||
|---|---|---|---|---|---|---|
| G034(HMSC) | AFGL(HMPO) | G589(UCHII) | ||||
| Observed | Detected | Observed | Detected | Observed | Detected | |
| C2H | 4.2–25.2 | 4.2–12.6 | 4.2–25.2 | 4.2–25.2 | 4.2–25.2 | 4.2–25.2 |
| c-C3H | 4.4–345 | − | 4.4–345 | 4.4–29 | 4.4–345 | − |
| c-C3H2b | 6.4–298 | 6.4–19.3 | 6.4–298 | 6.4–47 | 6.4–298 | 6.4–77.2 |
| C4H | 16.5–185 | 16.5–25.1 | 16.5–304 | 16.5–30 | 16.5–185 | − |
| CH3CCH | 12.3–696 | 12.3–36.9 | 12.3–2762 | 12.3–237 | 12.3–696 | 12.3–372 |
| CH3CN | 8.8–670 | − | 8.8–2204 | 8.8–329 | 8.8–670 | 8.8–549 |
| HC5N | 52–684 | − | 52–1088 | 52–150 | 52–684 | 52–242 |
Notes. Note that HC3Nis not included, as its observed and detected transitions are already listed in Table 4. (a) Minimum (Eu,min) and maximum (Eu,max) energies of the upper level of the transitions, respectively. (b) Only transitions with Eu ≤ 300 K are listed, as the detected transitions have much lower energies in all sources.
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