Table 2.
Molecular line properties derived from the integrated spectra of G09v1.97.
| Line | νcenter | Comp. | Spk | SRr/SB | Iline | IRb + Rr/IB | ΔVline | ΔVRb + Rr/ΔVB | μLLine/108 |  |
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| (GHz) | (mJy) | (Jy km s−1) | (km s−1) | (L⊙) | (K km s−1 pc2) | ||||||
| CO(6–5) | 149.287 | B | 7.1 ± 0.8 | 3.9 ± 1.1 | 2.2 ± 0.2 | 4.9 ± 0.9 | 293 ± 21 | 1.5 ± 0.2 | 3.7 ± 0.3 | 3.5 ± 0.3 | |
| Rb | 21.3 ± 5.3 | 6.0 ± 1.3 | 265 ± 33 | 10.0 ± 2.2 | 9.4 ± 2.0 | ||||||
| Rr | 27.7 ± 7.1 | 4.8 ± 1.2 | 163 ± 10 | 8.0 ± 2.0 | 7.5 ± 1.9 | ||||||
| H2O(211−202) | 162.362 | B | 2.9 ± 0.3 | 3.8 ± 0.4 | 0.9 ± 0.1 | 4.7 ± 0.5 | 293 | – | 1.6 ± 0.2 | 1.2 ± 0.1 | |
| Rb | 8.2 ± 0.4 | 2.3 ± 0.1 | 265 | 4.2 ± 0.2 | 3.1 ± 0.1 | ||||||
| Rr | 11.0 ± 0.6 | 1.9 ± 0.1 | 163 | 3.4 ± 0.2 | 2.5 ± 0.1 | ||||||
| H2O+(202−111) (5/2−3/2)(a) | 161.2 | B | 1.0 ± 0.3 | 3.5 ± 1.2 | 0.3 ± 0.1 | 4.0 ± 1.4 | 293 | – | 0.5 ± 0.2 | 0.4 ± 0.1 | |
| Rb | 2.1 ± 0.4 | 0.6 ± 0.1 | 265 | 1.1 ± 0.2 | 0.8 ± 0.1 | ||||||
| Rr | 3.5 ± 0.6 | 0.6 ± 0.1 | 163 | 1.1 ± 0.2 | 0.8 ± 0.1 | ||||||
| H2O+(211−202) (5/2−5/2)(b) | 160.2 | B (b) | 1.8 ± 0.4 (b) | – | 0.6 ± 0.1 (b) | – | 294 ± 43 (b) | – | 1.1 ± 0.2 | 0.8 ± 0.1 | |
 (c) |
160.907 (c) | Rr+Rb (d) | 1.7 ± 0.5 | – | 0.5 ± 0.1 | – | 250 ± 58 | – | 0.9 ± 0.2 | 0.7 ± 0.1 | |
| Dust continuum | 154.508 | 1.940 mm continuum | 8.8 ± 0.5 mJy | ||||||||
| 343.494 | 0.873 mm continuum | 106.6 ± 10.7 mJy | |||||||||
Notes.
νcenter is the sky frequency of the line center. Spk is the peak flux of the line component (Fig. 4). Note that the linewidth has been fixed when fitting the H2O (211−202) and H2O+(202−111)(5/2−3/2) lines. The linewidths used in these fits were assumed to be the same as those determined from fitting the CO line profile. The systematic velocity of the approaching gas B component is about −240 km s−1 with a 10% uncertainty, while for the receding gas component, Rb+Rr, the overall systematic velocity is about 170 km s−1 with 15% uncertainties. (a)The H2O+ line of G09v1.97 fitted here is dominated by H2O+(202−111)(5/2−3/2) (rest-frame frequency at 742.1 GHz). The contribution from the 742.3 GHz line H2O+(v)(5/2−3/2) is negligible. (b)The line H2O+(211−202)(5/2−5/2) with rest-frame frequency of 746.5 GHz is dominating the emission. The contribution from the 746.3 GHz H2O+(202−111)(3/2−3/2) can be neglected. Considering the similarity between the H2O line and the H2O+ lines in the line profiles (Yang et al. 2016, and this work), the H2O+ line is expected to have a similar profile structure. However, due to a gap between the two spectral windows (indicated by green stripe) where the red component of the line resides, the fitted values in the table is rather likely to be close to that of the approaching gas component B. (c)H2O(211−202) is blended with N2H+(8−7), see text for detailed discussions. (d)Because the line is weak and its blue-shifted part is partially in the spectral window gap, this component is rather representing the dominant receding gas Rb+Rr.
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