Table 1
Derived line parameters for the cores from the spectra integrated above the 3σ level.
| NH3 (1, 1)a | ||||
| core | A × τm | Vpeak | Δv | τm |
| (K) | (km s-1) | (km s-1) | ||
|
|
||||
| C1 | 3.3(0.6) | –18.24(0.02) | 1.42(0.05) | 0.4(0.2) |
| C1-a | 8.5(1) | –17.97(0.02) | 0.94(0.07) | 0.5(0.3) |
| C1-b | 5.2(0.9) | –18.40(0.04) | 1.3(0.1) | 0.3(0.4) |
| C2 | 11.7(0.2) | –17.822(0.009) | 1.48(0.02) | 1.9(0.1) |
| C3 | 3.7(0.3) | –17.1(0.02) | 1.06(0.05) | 1.5(0.3) |
| N | 10.1(0.9) | –17.829(0.005) | 0.63(0.02) | 1.7(0.15) |
| S | 19.2(0.6) | –17.438(0.007) | 0.66(0.02) | 2.8(0.2) |
| A1 | 4.4(0.6) | –17.900(0.007) | 0.63(0.02) | 0.5(0.2) |
| A2 | 12.1(0.7) | –18.00(0.01) | 0.58(0.02) | 1.75(0.2) |
|
|
||||
| NH3 (2, 2)b | ||||
| core | Area | Vpeak | Δv |
|
| (K km s-1) | (km s-1) | (km s-1) | (K) | |
|
|
||||
| C1 | 2.8(0.1) | –18.37(0.04) | 1.95(0.1) | 1.34(0.04) |
| C1-a | 5.0(0.5) | –18.04(0.06) | 1.25(0.14) | 3.7(0.1) |
| C1-b | 4.6(0.6) | –18.6(0.1) | 1.7(0.3) | 2.5(0.1) |
| C2 | 4.8(0.2) | –17.81(0.03) | 1.87(0.07) | 2.44(0.03) |
| C3 | 1.3(0.1) | –17.13(0.06) | 1.5(0.2) | 0.80(0.02) |
| N | 1.1(0.1) | –17.78(0.02) | 0.87(0.06) | 1.20(0.04) |
| S | 2.57(0.07) | –17.38(0.02) | 0.78(0.04) | 3.11(0.03) |
| A1 | 0.7(0.1) | –17.86(0.02) | 0.61(0.05) | 1.05(0.03) |
| A2 | 1.27(0.09) | –18.02(0.02) | 0.60(0.04) | 1.78(0.03) |
Notes. The uncertainties obtained from the fitting procedure are in parentheses.
Columns 2 − 5 list the results of the CLASS hyperfine fitting procedure: A × τm = f[Jν(Tex) − Jν(TBG)] , where f is the filling factor (assumed to be unity), Jν(Tex) and Jν(TBG) are the equivalent Rayleigh-Jeans excitation and background temperatures, respectively, τm is the opacity of the main group of hyperfine components; Vpeak = peak velocity; Δv = full width at half maximum corrected for hyperfine splitting; τm = opacity of the main group of hyperfine components;
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