Table 2
Observed lines and corresponding telescope parameters for the observations of the extended G region of IC443.
| Species | 12CO | 12CO | 12CO | 12CO | 13CO | 13CO | 13CO | C18O | C18O |
|---|---|---|---|---|---|---|---|---|---|
| Line | (1–0) | (2–1) | (2–1) | (3–2) | (1–0) | (2–1) | (3–2) | (1–0) | (2–1) |
| Telescope | IRAM 30 m | IRAM 30 m | APEX | APEX | IRAM 30 m | APEX | APEX | IRAM 30 m | APEX |
| ν (GHz) | 115.271 | 230.538 | 230.538 | 345.796 | 110.201 | 220.399 | 330.588 | 109.782 | 219.560 |
| FWHM (′′) | 22.5 | 11.2 | 28.7 | 19.2 | 23.5 | 30.1 | 20.0 | 23.6 | 30.2 |
| Sampling (′′) | 3.5 | 3.5 | 6 | 6 | 3.5 | 6 | 6 | 3.5 | 6 |
| Receiver | EMIR | EMIR | PI230 | FLASH345 | EMIR | PI230 | FLASH345 | EMIR | PI230 |
| Obs. dates | 19-02-20 | 19-02-20 | 18-09-11 | 18-09-11 | 19-02-20 | 18-09-11 | 18-09-11 | 19-02-20 | 18-09-11 |
| 19-02-24 | 19-02-24 | 18-09-11 | 18-09-11 | 19-02-24 | 18-09-11 | 18-09-11 | 19-02-24 | 18-09-11 | |
| Feff | 0.94 | 0.92 | 0.95 | 0.95 | 0.91 | 0.95 | 0.95 | 0.94 | 0.95 |
| Beff | 0.78 | 0.59 | 0.73 | 0.63 | 0.51 | 0.73 | 0.63 | 0.78 | 0.73 |
 (K) |
172 | 321 | 146 | 291 | 118 | 129 | 330 | 118 | 129 |
| Δv (km s−1) | 0.5 | 0.5 | 0.1 | 0.1 | 0.5 | 0.1 | 0.1 | 0.5 | 0.1 |
| rms (K) | 0.035 | 0.039 | 0.069 | 0.066 | 0.025 | 0.084 | 0.080 | 0.022 | 0.130 |
Notes. ν is the frequency of the transition, FWHM corresponds to the full width at half maximum of the instrumental beam, Feff is the forward efficiency, and Beff the beam efficiency of the dish. The quantity 
is the average system noisetemperature and Δv the nominal spectral resolution. PWV is the precipitable water vapor, and rms is the standard deviation measured on the baseline resampled with a spectral resolution of 0.5 km s−1 to allow direct comparison between the data from the IRAM 30 m and APEX telescopes.
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