Table 1
Fit and derived parameters for two related velocity components in G16.11–0.51.
| Gaussian components | ||||
|---|---|---|---|---|
| Component | Line | Peak Tmb (K) | Center VLSR(a) (km s−1) | FWHM (km s−1) |
| Rest | 12CO (J = 1–0) | 4.79 ± 0.03 | +43.31 ± 0.07 | 12.4 ± 0.2 |
| 13CO (J = 1–0) | 1.027 ± 0.007 | +41.25 ± 0.09 | 12.0 ± 0.3 | |
| Shifted | 12CO (J = 1–0) | 1.30 ± 0.03 | +58.0 ± 0.2 | 8.8 ± 0.4 |
| 13CO (J = 1–0) | 0.198 ± 0.008 | +57.4 ± 0.2 | 7.8 ± 0.5 | |
| Derived physical parameters | ||||
|---|---|---|---|---|
| Component | Tex(b) (K) | τ(13CO)(b) | N(H2)(C) (1021 cm–2) | M(c) (104 M⊙) |
| Rest | 8.1 | 0.27 | 11(11) |  |
| Shifted | 4.3 | 0.19 | 1.9 (2.2) |  |
Notes. (a) VLSR is the velocity with respect to the local standard of rest. (b)Using the assumption of local thermal equilibrium (LTE). See the details of the calculation method in Zhou et al. (2016). (c)Derived from 13CO column density by assuming the 13CO abundance of l.4×l0–6 (Ripple et al. 2013). For comparison, we also show the values in parentheses, which are estimated by using the conversion factor N(H2)/W(12CO) ≃ 1.8 × 1020 cm–2 K–1 km–1 s (Dame et al. 2001). d3.2 stands for d/(3.2 kpc), where d is the distance to G16.11–0.51 in kiloparsecs.
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