Table 2
Excitation temperatures in units of Kelvin derived from the LTE slab models.
| Source | Cold H2O | Warm H2O | Rovib H2O | CO2 | C2H2 | HCN | CH4 | SO2 | SiO |
|---|---|---|---|---|---|---|---|---|---|
| B1-a-NS | 160 ± 10 | 370±10 | 405 ± 15 | 115 ± 25 | – | – | – | – | – |
| B1-c | – | 325 ± 15 | 300±10 | 330±10 | 285 ± 25 | 180±10 | 200 ± 10 | 150±10 | – |
| L1448-mm | 130±10 | 390±10 | 180±10 | 120±10 | 110±10 | 110±10 | 130 ± 10 | 115±15 | 315 ± 15 |
| Ser-S68N-N | 200 ± 10 | – | – | – | – | – | – | – | – |
| Ser-SMM1B | – | – | 980 ± 20 | 205 ± 25 | – | – | – | – | – |
| Ser-SMM3 | – | – | – | 90 ± 10 | – | – | – | – | – |
| SVS4-5 | 210±10 | 515±15 | 1040 ± 20 | [200] | – | – | 460 ± 80 | – | – |
| L1527 | – | – | 90 ± 10 | – | – | – | – | – | – |
| TMC1A | – | – | 440 ± 10 | 60 ± 10 | – | – | – | – | – |
| TMC1-E | 185±15 | 405 ± 15 | 580 ± 20 | 315 ± 25 | – | – | – | – | – |
| TMC1-W | 190±10 | 485 ± 15 | 1180±20 | 190±10 | – | – | – | – | – |
| BHR71-IRS1 | 140 ± 10 | – | 560 ± 10 | 260 ± 10 | [150] | – | – | – | 400 ± 20 |
| BHR71-IRS2 | – | – | 440 ± 40 | 75 ± 15 | – | – | – | – | – |
Notes. Square brackets indicate that the excitation temperature was fixed during the fit. The excitation temperatures of C4H2, CS, and NH3 are not shown since they are only detected toward one source (L1448-mm or B1-c). Sources for which no molecular emission or absorption features are detected (i.e., B1-b, Per-emb 8, Ser-SMM1A) are not shown.
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