Table 5
Gas temperature estimated from the CO (2–1) and (3–2) spectra.
| CO (2–1) | CO (3–2) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| nH2 | Tk | Nco | Tex | τ | Tb | Tex | τ | Tb | |
| (cm−3) | (K) | (cm−2) | (K) | (K) | (K) | (K) | |||
| Blueshifted component | |||||||||
| 105 | 15 |
>1.2 × 1016 | 15 |
>0.9 | 9.0 |
14 |
>1.1 | 6.9 |
|
| ≥ 106 | 14 |
>1.3 × 1016 | 14 |
>1 | 8.8 |
14 |
>1.1 | 7 |
|
Redshifted component |
|||||||||
| 105 | 32 |
 |
31 |
0.6 |
11.7 |
30 ± 6 | 0.9 |
13.4 |
|
| ≥ 106 | 28 |
 |
28 |
0.7 |
11.8 |
28 |
1.1 |
13.3 ± 0.1 | |
Notes. nH2 is the H2 number density, Tk is the gas kinematic temperature, Nco is the CO column density, Tex is the excitation temperature, τ is the optical depth, and Tb is the peak brightness temperature. In our spectral fitting with the radiative calculation, Tk and Nco are the free parameters, and nH2 is a fixed parameter.
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