Table 1.
Calculated and observational parameters of MgC5N and MgC6H lines in our Q-band observations of IRC +10216.
| MgC5N |
MgC6H |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N(J) | νcalc | νobs | Eup | vul | W | R | νcalc | νobs | Eup | Sul | W | R |
| 27(53/2)→26(51/2) | 31305.40 | 31305.41 | 20.9 | 26.5 | 332 | 23.094 | ||||||
| 27(55/2)→26(53/2) | 31307.36 | 31307.36 | 20.9 | 27.5 | 332 | 23.056 | ||||||
| 28(55/2)→27(53/2) | 32278.59 | 32278.52 | 22.5 | 27.5 | 152 | 20.098 | 32464.88 | 32464.93 | 22.5 | 27.5 | 223 | 22.623 |
| 28(57/2)→27(55/2) | 32280.40 | 32280.53 | 22.5 | 28.5 | 379 | 20.978 | 32466.84 | = | 22.5 | 28.5 | 74 | 21.489 |
| 29(57/2)→28(55/2) | 33431.38 | 33431.36 | 24.1 | 28.5 | 273 | 20.616 | 33624.36 | = | 24.1 | 28.5 | 67 | 21.351 |
| 29(59/2)→28(57/2) | 33433.19 | 33433.20 | 24.1 | 29.5 | 273 | 20.582 | 33626.32 | 33626.31 | 24.1 | 29.5 | 67 | 21.316 |
| 30(59/2)→29(57/2) | 34584.17 | 34584.20 | 25.7 | 29.5 | 310 | 20.673 | 34783.84 | 34784.02 | 25.7 | 29.5 | 244 | 22.571 |
| 30(61/2)→29(59/2) | 34585.98 | 34586.10 | 25.7 | 30.5 | 433 | 20.976 | 34785.79 | 34785.76 | 25.7 | 30.5 | 122 | 21.844 |
| 31(61/2)→30(59/2) | 35736.95 | 35736.93 | 27.4 | 30.5 | 282 | 20.514 | 35943.31 | 35943.32 | 27.4 | 30.5 | 111 | 21.719 |
| 31(63/2)→30(61/2) | 35738.76 | 35738.74 | 27.4 | 31.5 | 169 | 19.971 | 35945.27 | 35945.15 | 27.4 | 31.5 | 167 | 22.092 |
| 32(63/2)→31(61/2) | 36889.72 | 36889.68 | 29.2 | 31.5 | 155 | 19.851 | 37102.79 | = | 29.2 | 31.5 | 102 | 21.567 |
| 32(65/2)→31(63/2) | 36891.53 | 36891.22 | 29.2 | 32.5 | 155 | 19.820 | 37104.74 | 37104.61 | 29.2 | 32.5 | 305 | 22.634 |
| 33(65/2)→32(63/2) | 38042.49 | 38042.49 | 31.0 | 32.5 | 143 | 19.705 | 38262.26 | 38262.21 | 31.0 | 32.5 | 94 | 21.422 |
| 33(67/2)→32(65/2) | 38044.30 | 38044.36 | 31.0 | 33.5 | 285 | 20.368 | 38264.21 | = | 31.0 | 33.5 | 140 | 21.797 |
| 34(67/2)→33(65/2) | 39195.26 | 39195.18 | 32.9 | 33.5 | 220 | 20.077 | 39421.72 | = | 32.9 | 33.5 | 173 | 21.976 |
| 34(69/2)→33(67/2) | 39197.06 | 39197.00 | 32.9 | 34.5 | 307 | 20.384 | 39423.68 | 39423.39 | 32.9 | 34.5 | 346 | 22.640 |
| 35(69/2)→34(67/2) | 40348.01 | 40347.94 | 34.9 | 34.5 | 285 | 20.280 | 40581.19 | 34.9 | 34.5 | |||
| 35(71/2)→34(69/2) | 40349.82 | 40349.69 | 34.9 | 35.5 | 285 | 20.251 | 40583.15 | = | 34.9 | 35.5 | 241 | 22.220 |
| 36(71/2)→35(69/2) | 41500.77 | 41500.78 | 36.8 | 35.5 | 266 | 20.152 | 41740.66 | 41740.10 | 36.8 | 35.5 | 150 | 21.715 |
| 36(73/2)→35(71/2) | 41502.57 | 41502.43 | 36.9 | 36.5 | 152 | 19.564 | 41742.61 | = | 36.9 | 36.5 | 112 | 21.400 |
| 37(73/2)→36(71/2) | 42653.51 | 42653.55 | 38.9 | 36.5 | 177 | 19.693 | 42900.12 | 42900.43 | 38.9 | 36.5 | 210 | 21.999 |
| 37(75/2)→36(73/2) | 42655.32 | 42655.25 | 38.9 | 37.5 | 177 | 19.666 | 42902.07 | 42901.47 | 38.9 | 37.5 | 70 | 20.873 |
| 38(75/2)→37(73/2) | 43806.25 | 43806.45 | 41.0 | 37.5 | 100 | 19.065 | 44059.20 | 41.0 | 37.5 | |||
| 38(77/2)→37(75/2) | 43808.06 | 43807.98 | 41.0 | 38.5 | 200 | 19.731 | 44061.52 | 44061.53 | 41.0 | 38.5 | 66 | 20.757 |
| 39(77/2)→38(75/2) | 44958.98 | 44958.88 | 43.2 | 38.5 | 94 | 18.952 | 45219.04 | 43.2 | 38.5 | |||
| 39(79/2)→38(77/2) | 44960.79 | 44960.46 | 43.2 | 39.5 | 157 | 19.437 | 45220.99 | 43.2 | 39.5 | |||
| 40(79/2)→39(77/2) | 46111.71 | 46111.60 | 45.4 | 39.5 | 118 | 19.132 | 46378.49 | = | 45.4 | 39.5 | 146 | 21.480 |
| 40(81/2)→39(79/2) | 46113.51 | 46113.74 | 45.4 | 40.5 | 178 | 19.512 | 46380.45 | 45.4 | 40.5 | |||
| 41(81/2)→40(79/2) | 47264.42 | 47264.57 | 47.6 | 40.5 | 168 | 19.434 | 47537.94 | 47.6 | 40.5 | |||
| 41(83/2)→40(81/2) | 47266.23 | 47266.21 | 47.6 | 41.5 | 84 | 18.716 | 47539.90 | 47.6 | 41.5 | |||
| 42(83/2)→41(81/2) | 48417.14 | 50.0 | 41.5 | 48697.40 | 48697.07 | 50.0 | 41.5 | 158 | 21.460 | |||
| 42(85/2)→41(83/2) | 48418.94 | 50.0 | 42.5 | 48699.35 | 50.0 | 42.5 | ||||||
Notes. Quantum numbers are N(J) for both species. Frequencies are given in MHz, energies in K, W = ∫TMBdv in mK⋅kms−1. We note that R is the rotational diagram = ln(3 kB W/8 π3 νrest Sul μ2). The symbol = in the observed frequencies means that the fitting was forced to use the calculated frequency resulting from all the other observed frequencies that could be freely fitted from the data. Blanks are left for observed parameters that could not be obtained due to blending with much stronger lines or frequencies outside the survey’s range. The boldface indicates lines shown in Fig. 2.
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