Table 3
CO line parameters for NGC 253 and CO and CN line parameters for Mrk 231, obtained from Gaussian fits.
| Line |
|
V | ν | Δν1 /2 | T mb |
| (K MHz) | (km s-1) | (MHz) | (MHz) | (mK) | |
|
|
|||||
| NGC 253 | |||||
| 12C16O J = 1 → 0 | 403.040 ± 0.125 | 285 ± 1 | 115 161.571 ± 0.010 | 68.931 ± 0.025 | 5847 ± 3 |
| Comp. 1 | 360.970 ± 0.149 | 293 ± 1 | 115 158.298 ± 0.002 | 59.460 ± 0.029 | 6070 ± 4 |
| Comp. 2 | 45.321 ± 0.121 | 155 ± 1 | 115 211.774 ± 0.032 | 35.844 ± 0.092 | 1264 ± 5 |
| 13C16O J = 1 → 0 | 28.840 ± 0.070 | 285 ± 1 | 110 096.675 ± 0.075 | 63.038 ± 0.184 | 458 ± 2 |
| Comp. 1 | 24.349 ± 0.075 | 300 ± 1 | 110 092.448 ± 0.072 | 49.949 ± 0.172 | 487 ± 2 |
| Comp. 2 | 4.593 ± 0.066 | 167 ± 1 | 110 139.946 ± 0.179 | 32.367 ± 0.358 | 142 ± 3 |
| 12C18O J = 1 → 0 | 8.009 ± 0.101 | 285 ± 1 | 109 677.878 ± 0.372 | 60.921 ± 0.949 | 131 ± 3 |
| Comp. 1 | 6.652 ± 0.084 | 297 ± 1 | 109 673.695 ± 0.264 | 46.421 ± 0.691 | 143 ± 3 |
| Comp. 2 | 1.379 ± 0.073 | 169 ± 2 | 109 720.494 ± 0.600 | 29.242 ± 1.412 | 47 ± 3 |
| 12C17O J = 1 → 0 | 0.629 ± 0.056 | 286 ± 5 | 112 252.191 ± 1.894 | 44.837 ± 5.007 | 14 ± 2 |
| 13C16O J = 2 → 1 | 123.010 ± 0.261 | 278 ± 1 | 220 194.289 ± 0.107 | 105.105 ± 0.272 | 1170 ± 4 |
| 12C18O J = 2 → 1 | 33.905 ± 0.212 | 278 ± 1 | 219 356.938 ± 0.273 | 92.815 ± 0.734 | 365 ± 4 |
| 12C17O J = 2 → 1 | 4.216 ± 0.147 | 273 ± 2 | 224 509.430 ± 1.437 | 86.434 ± 3.724 | 49 ± 3 |
| Mrk 231 | |||||
| 12C16O J = 1 → 0 | 4.687 ± 0.034 | 12658 ± 01 | 110 601.313 ± 00.268 | 75.254 ± 00.650 | 2.3 ± 0.7 |
| 13C16O J = 1 → 0 | 0.178 ± 0.041 | 12723 ± 28 | 105 714.712 ± 09.762 | 89.608 ± 31.488 | 2.0 ± 0.8 |
| 12C18O J = 1 → 0 | 0.142 ± 0.034 | 12685 ± 31 | 105 325.492 ± 10.778 | 75.964 ± 26.302 | 1.9 ± 0.8 |
| 12C16O J = 2 → 1 | 33.178 ± 0.135 | 12661 ± 01 | 221 196.545 ± 00.299 | 151.903 ± 00.731 | 218.4 ± 1.4 |
| 13C16O J = 2 → 1 | 0.693 ± 0.142 | 12682 ± 13 | 211 453.470 ± 09.194 | 91.493 ± 21.645 | 7.6 ± 2.4 |
| 12C18O J = 2 → 1 | 0.544 ± 0.131 | 12691 ± 16 | 210 643.401 ± 11.551 | 73.979 ± 22.168 | 7.4 ± 2.8 |
| CN N = 1 → 0 | 0.295 ± 0.053 | – | 108 590.836 ± 06.522 | 84.815 ± 22.957 | 3.5 ± 1.1 |
| CN N = 1 → 0 | 0.600 ± 0.040 | – | 108 898.443 ± 02.392 | 73.780 ± 05.832 | 8.1 ± 0.8 |
| CN N = 2 → 1 | 1.714 ± 0.189 | – | 217 691.713 ± 07.215 | 139.615 ± 18.827 | 12.3 ± 2.1 |
| CN N = 2 → 1 | 1.544 ± 0.197 | – | 217 442.541 ± 11.022 | 177.146 ± 25.067 | 8.7 ± 1.7 |
| CN N = 2 → 1 | 0.499 ± 0.117 | – | 217 165.557 ± 08.030 | 70.279 ± 19.209 | 7.1 ± 2.6 |
Notes. Given frequencies refer to the local standard of rest (LSR) VLSR = 0 km s-1 frequency scale. All errors are standard deviations obtained from Gaussian fits, except those in the last column. The Tmb values and errors were derived by combining the values of Cols. 2 and 5. Outflow components (see Turner et al. 1985; Feruglio et al. 2010; Aalto et al. 2012; Bolatto et al. 2013), not apparent in the weaker isotopic lines, are not included in the fits. For potential calibration errors, see Sect. 3.6.2. Because of the large bandwidths of the spectra, yielding potentially complex velocity-frequency correlations, frequencies and not velocities are emphasized. For the CO lines, however, optical (cz) VLSR values are also given, mainly to show the relative importance of the two main spectral features in NGC 253. Since each CN component represents a group of hyperfine components of different strengths, no velocities are given in this case.
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