Table 6.
Upper limits to propynethial and the line parameters used to calculate them in each of the sets of observations.
| Source | Frequency | Transition | Eu | Sijμ2 | Q (Qrot, Qvib) (a) | NT | N(H2) | XH2 | Refs. |
|---|---|---|---|---|---|---|---|---|---|
| (MHz) | ( ) |
(K) | (Debye2) | (cm−2) | (cm−2) | N(H2) | |||
| NGC 6334I | 282676.0 | 474, 44 − 464, 43 | 478.7 | 140.7 | 16358 (13560, 1.21) | ≤1.5 × 1016 | – | – | – |
| Sgr B2(N) | 47956.5 | 80, 8 − 70, 7 | 10.4 | 24.9 | 3032 (3019, 1.00) | ≤6.2 × 1013 | 1 × 1024 | ≤6 × 10−11 | 1 |
| Barnard 1 | 85442.4 | 141, 13 − 131, 12 | 32.7 | 43.3 | 275 (275, 1.00) | ≤9.1 × 1011 | 1.5 × 1023 | ≤6 × 10−12 | 3 |
| IRAS 4A | 89560.5 | 150, 15 − 140, 14 | 34.5 | 46.6 | 830 (830, 1.00) | ≤2.3 × 1012 | 3.7 × 1023 | ≤6 × 10−12 | 3 |
| L1157B1 | 90124.4 | 153, 13 − 143, 12 | 51.7 | 44.8 | 4051 (4006, 1.01) | ≤2.3 × 1012 | 1 × 1021 | ≤2 × 10−9 | 3 |
| L1157mm | 90124.4 | 153, 13 − 143, 12 | 51.7 | 44.8 | 4051 (4006, 1.01) | ≤1.5 × 1012 | 6 × 1021 | ≤3 × 10−10 | 3 |
| L1448R2 | 90124.4 | 153, 13 − 143, 12 | 51.7 | 44.8 | 4051 (4006, 1.01) | ≤4.7 × 1012 | 3.5 × 1023 | ≤1 × 10−11 | 4 |
| L1527 | 76569.0 | 131, 13 − 121, 12 | 27.7 | 40.2 | 275 (275, 1.00) | ≤1.1 × 1012 | 2.8 × 1022 | ≤4 × 10−11 | 4 |
| L1544 | 85442.4 | 141, 13 − 131, 12 | 32.7 | 43.3 | 275 (275, 1.00) | ≤4.0 × 1011 | 5 × 1021 | ≤8 × 10−11 | 5 |
| SVS13A | 210375.5 | 353, 33 − 343, 32 | 198.8 | 108.0 | 6409 (6174, 1.04) | ≤1.1 × 1016 | 3 × 1024 | ≤4 × 10−9 | 6 |
| TMC1 | 156597.4 | 62, 4 − 51, 5 | 13.7 | 1.0 | 275 (275, 1.00) | ≤2.6 × 1012 | 1 × 1022 | ≤3 × 10−10 | 3 |
Notes.
Calculated at the excitation temperature assumed for the source. See Table A.1.
References. [1] Lis & Goldsmith (1990), [2] Crockett et al. (2014), [3] Cernicharo et al. (2018), [4] Jørgensen et al. (2002), [5] Vastel et al. (2014), [6] Chen et al. (2009).
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