Table 3
Molecular data for species detected toward the SW absorption.
| Molecule | μ | Q5.14 K | Nline | V0 | ΔV | Trotc | NCOLc | NLTEd | Note | ||
| (Debye) | a | b | (km s-1) | (km s-1) | (K) | (1012 cm-2) | (1012 cm-2) | ||||
|
|
|||||||||||
| C2H | 0.77 | 2.81 | 6 | −0.45 (0.03) | 20.9 (0.1) | – | – | 1248.5 (1.4) | hfs,CDMS | ||
| HCN | 2.99 | 2.78 | 1 | −2.83 (0.01) | 28.9 (0.0) | – | – | 304.1 (0.5) | CDMS | ||
| H13CN | 2.99 | 2.84 | 1 | −2.27 (0.14) | 21.4 (0.3) | – | – | 8.4 (0.1) | CDMS | ||
| HC15N | 2.99 | 2.85 | 1 | – | – | – | – | 1.6 (0.1) | CDMS | ||
| HNC | 3.05 | 2.73 | 1 | −1.75 (0.02) | 20.8 (0.1) | – | – | 101.8 (0.3) | CDMS | ||
| HN13C | 3.05 | 2.82 | 1 | – | – | – | – | 2.2 (0.1) | CDMS | ||
| H15NC | 3.05 | 2.77 | 1 | – | – | – | – | 0.3 (0.1) | JPL | ||
| N2H+ | 3.40 | 2.66 | 1 | −3.29 (0.12) | 21.0 (0.3) | – | – | 23.3 (0.3) | CDMS | ||
| HCO+ | 3.90 | 2.77 | 1 | −2.43 (0.02) | 32.4 (0.0) | – | – | 175.1 (0.3) | CDMS | ||
| H13CO+ | 3.90 | 2.83 | 1 | −1.83 (0.07) | 18.4 (0.2) | – | – | 8.3 (0.1) | CDMS | ||
| HC18O+ | 3.90 | 2.88 | 1 | – | – | – | – | 3.6 (0.1) | CDMS | ||
| HC17O+ | 3.90 | 2.82 | 1 | – | – | – | – | 0.2 (0.0) | CDMS | ||
| HOC+ | 2.77 | 2.76 | 1 | −0.78 (0.39) | 20.5 (0.9) | – | – | 3.2 (0.1) | CDMS | ||
| HCO | 1.36 | 2.83 | 4 | 1.44 (0.59) | 18.1 (1.4) | – | – | 13.0 (1.8) | hfs,JPL | ||
| CH2NH | 1.53 | 14.63 | 1 | −0.71 (0.36) | 13.8 (0.8) | – | – | 14.9 (0.8) | JPL | ||
| H2CO(p) | 2.33 | 3.30 | 1 | −1.00 (0.04) | 20.3 (0.1) | – | – | 59.8 (0.2) | CDMS | ||
| CH3NH2(o) | 1.26 | 208.60 | 2 | −6.19 (1.64) | 20.6 (3.9) | 4.0  |
6.0  |
15.0 (3.1) | JPL | ||
| CH3NH2(p) | 1.26 | 69.84 | 1 | – | – | – | – | 17.1 (3.9) | JPL | ||
| CH3OH | 1.44 | 6.97 | 1 | −5.26 (0.51) | 21.2 (1.2) | – | – | 170.0 (8.3) | CDMS | ||
| l-C3H | 3.55 | 43.53 | 4 | 0.18 (0.50) | 17.5 (1.0) | – | – | 7.1 (0.1) | hfs,CDMS | ||
| c-C3H2(o) | 3.43 | 22.57 | 2 | −0.94 (0.07) | 18.7 (0.2) | 5.6  |
32.0  |
39.1 (0.3) | JPL | ||
| c-C3H2(p) | 3.43 | 7.53 | 2 | – | – | 5.4  |
10.5  |
13.8 (0.2) | JPL | ||
| l-C3H2(o) | 4.10 | 4.30 | 3 | −1.93 (0.00) | 21.1 (2.6) | 5.3  |
1.0  |
1.5 (0.2) | CDMS | ||
| l-C3H2(p) | 4.10 | 10.64 | 1 | – | – | – | – | 0.6 (0.2) | CDMS | ||
| H2CCN(o) | 3.50 | 197.52 | 2 | −1.83 (2.03) | 17.9 (4.5) | 3.0  |
1.0  |
2.2 (0.3) | hfs,CDMS | ||
| CH3CCH | 0.78 | 85.55 | 1 | 0.59 (1.54) | 15.6 (4.0) | – | – | 60.0 (0.0) | CDMS | ||
| CH3CN | 3.92 | 80.51 | 2 | −2.70 (0.00) | 21.6 (0.0) | – | – | 13.0 (0.0) | CDMS | ||
| H2CCO(o) | 1.42 | 4.71 | 4 | −1.62 (0.99) | 21.2 (2.3) | 2.6  |
5.0  |
13.2 (1.1) | CDMS | ||
| HNCO | 1.58 | 10.09 | 2 | −5.12 (0.88) | 22.0 (2.1) | – | – | 6.2 (0.6) | CDMS | ||
| SiO | 3.10 | 5.28 | 1 | −2.29 (0.18) | 20.6 (0.4) | – | – | 7.5 (0.1) | CDMS | ||
| 29SiO | 3.10 | 5.34 | 1 | – | – | – | – | 0.7 (0.2) | CDMS | ||
| CH3CHO | 2.42 | 55.30 | 9 | −0.80 (0.73) | 19.3 (1.7) | 7.5  |
15.0  |
12.4 (0.9) | JPL | ||
| NS | 1.81 | 26.85 | 10 | −2.61 (0.78) | 20.9 (1.8) | – | – | 11.5 (0.6) | hfs,JPL | ||
| H2CS(o) | 1.65 | 2.58 | 2 | −1.60 (0.79) | 14.1 (1.9) | – | – | 5.7 (0.8) | CDMS | ||
| H2CS(p) | 1.65 | 6.58 | 1 | – | – | – | – | 1.9 (0.3) | CDMS | ||
| SO | 1.54 | 7.64 | 2 | −1.01 (0.30) | 19.7 (0.7) | 5.4  |
21.0  |
25.6 (0.8) | CDMS | ||
| SO+ | 2.30 | 11.06 | 2 | 1.54 (2.00) | 20.0 (0.0) | – | – | 1.7 (0.3) | JPL | ||
| C4H | 0.87 | 91.36 | 8 | −1.05 (0.59) | 18.5 (1.4) | 8.0  |
110.0  |
131.3 (7.8) | CDMS | ||
| HC3N | 3.73 | 23.88 | 4 | −3.90 (0.46) | 21.4 (0.9) | 6.3  |
8.3  |
11.2 (0.4) | CDMS | ||
| C2S | 2.88 | 24.71 | 3 | −1.35 (0.83) | 18.2 (2.0) | 5.7  |
3.2  |
4.8 (0.4) | CDMS | ||
Notes.
For species with ortho/para symmetry, the two forms were considered as distinct species and the partition function Q was thus calculated accordingly, with the weight factors g = 3 for ortho form, and g = 1 for para form. Hyperfine structure was taken into account when necessary.
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