Table 1
Observed line parameters of the new molecule toward IRC +10216.
| Ju | vobs(a) (MHz) | Δv(b) (MHz) |  (mK km s−1) |
 (mK) |
Blended with |
|---|---|---|---|---|---|
| 52 | 31186.014±0.100 | −0.133 | 17.26 | 0.65/0.57 | |
| 53 | 31785.852(*) | C4H v7 | |||
| 54 | 32385.582±0.100 | 0.027 | 12.00 | 0.45/0.40 | |
| 55 | 32985.308±0.100 | 0.051 | 10.92 | 0.41/0.36 | |
| 56 | 33585.009±0.100 | 0.052 | 14.25 | 0.55/0.46 | |
| 57 | 34184.681±0.100(+) | 0.026 | 12.29 | 0.48/0.40 | C7H & CH3CCH |
| 58 | 34784.352(*) | MgC6H | |||
| 59 | 35384.140±0.100 | 0.093 | 14.37 | 0.56/0.47 | |
| 60 | 35983.740±0.100 | 0.001 | 14.13 | 0.55/0.46 | |
| 61 | 36583.364±0.100 | −0.067 | 13.90 | 0.54/0.45 | |
| 62 | 37183.120(*) | HC9N & CH3CN | |||
| 63 | 307782.673±0.100 | −0.135 | 7.90 | 0.49/0.16 | |
| 64 | 38382.592±0.200(+) | 0.099 | 11.69 | 0.45/0.37 | HC9N v19 |
| 65 | 38982.276±0.200 | 0.099 | 13.04 | 0.51/0.42 | |
| 66 | 39581.880±0.200 | 0.022 | 12.89 | 0.50/0.42 | |
| 67 | 40181.770±0.300 | 0.232 | 12.65 | 0.49/0.41 | |
| 68 | 40781.215(*) | HC9N 2 v19 | |||
| 69 | 41381.126±0.200 | 0.236 | 12.29 | 0.48/0.40 | |
| 70 | 41980.564(*) | U line | |||
| 71 | 42580.010±0.200(+) | −0.226 | 9.83 | 0.38/0.32 | HC9N 3 v19 |
| 72 | 43179.904(*) | U line | |||
| 73 | 43779.570(*) | U line | |||
| 74 | 44379.234(*) | HC9N 2ν19 & CCCC19CH |
Notes. (a)Observed frequency assuming a vLSR of −26.5 km s−1. (b)Observed minus calculated frequencies in MHz. (c)Integrated line intensity in mK km s−1. Uncertainty is assumed to be dominated by the calibration uncertainty of 10%. (d)Antenna temperature at the terminal velocity (horn) and at the line center in millikelvin (mK). (+)Blended line but fit still possible. (*)Heavily blended. Fit not possible. Reported frequency corresponds to the predicted one.
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