Table 1
Spectroscopic parameters of the observed lines.
| Molecule | Transition (J′K′ − JK) | Frequency a (MHz) | Feff/Beff | rms (mK) | Eup a (K) | gup a | Aa (s−1) | Reference |
|---|---|---|---|---|---|---|---|---|
| HC3N | J = 11-10 | 100076.39(2) | 0.95/0.79 | 110 | 28.8 | 23 | 7.77 × 10−5 | 1 |
| HCC13CN* | J = 10-9 | 90601.78(3) | 0.95/0.80 | 8 | 23.9 | 21 | 5.74 × 10−5 | 2 |
| DC3N* | J = 10-9 | 84429.814(3) | 0.95/0.81 | 17 | 22.3 | 21 | 4.69 × 10−5 | 1 |
| DC3N | J = 11-10 | 92872.375(3) | 0.95/0.80 | 19 | 26.7 | 23 | 6.24 × 10−5 | 1 |
| CH3CCH | JK = 53−43 | 85442.6012(1) | 0.95/0.81 | 16 | 77.3 | 44 | 1.30 × 10−6 | 3 |
| CH3CCH | JK = 52−42 | 85450.7663(1) | 0.95/0.81 | 16 | 41.1 | 22 | 1.70 × 10−6 | 3 |
| CH3CCH* | JK = 51−41 | 85455.6667(1) | 0.95/0.81 | 10 | 19.5 | 22 | 1.95 × 10−6 | 3 |
| CH3CCH | JK = 50−40 | 85457.3003(1) | 0.95/0.81 | 10 | 12.3 | 22 | 2.03 × 10−6 | 3 |
| CH3CCH | Jk = 63−53 | 102530.3476(1) | 0.95/0.79 | 37 | 82.3 | 52 | 2.69 × 10−6 | 3 |
| CH3CCH | JK = 62−52 | 102540.1446(1) | 0.95/0.79 | 37 | 46.1 | 26 | 3.16 × 10−6 | 3 |
| CH3CCH | JK = 61−51 | 102546.0242(1) | 0.95/0.79 | 37 | 24.5 | 26 | 3.46 × 10−6 | 3 |
| CH3CCH | JK = 60−50 | 102547.9844(1) | 0.95/0.79 | 33 | 17.2 | 26 | 3.56 × 10−6 | 3 |
| CH3CCD | JK = 61−51 | 93454.331(3) | 0.95/0.80 | 8 | 22.9 | 26 | 2.51 × 10−6 | 4 |
| CH3CCD* | JK = 60−50 | 93456.044(3) | 0.95/0.80 | 8 | 15.7 | 26 | 2.59 × 10−6 | 4 |
| CH2DCCH* | JKaKc = 606−505 | 97080.728(6) | 0.95/0.80 | 15 | 16.3 | 13 | 3.03 × 10−6 | 4 |
Notes. The transitions used to derive the molecular column density are marked with an asterisk. Numbers in parenthesis give the uncertainty on the last digit. (a)Extracted from the Cologne Database for Molecular Spectroscopy (Müller et al. 2001). (1) Mallinson & de Zafra (1978), (2) Creswell et al. (1977), (3) Bauer & Burie (1969), (4) Leguennec et al. (1993).
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