Table 2
Parameters of the NH3 inversion lines observed around W51 Main.
| Line | Fpeak | Vc | ΔV1/2 | Fint | Fcont | ||||||||
| (J,K) | (Jy) | (km s-1) | (km s-1) | (Jy km s-1) | (Jy) | ||||||||
|
|
|||||||||||||
| W51e2-W (HC HII) | |||||||||||||
| J2000 19:23:43.9054 +014.30.34.487, 0.8″ × 0.9″, PA = 0deg | |||||||||||||
| (6, 6) | −0.336 ± 0.001 | 57.14 ± 0.01 | 7.29 ± 0.03 | −2.61 ± 0.01 | 0.362 | ||||||||
| (7, 7) | −0.310 ± 0.001 | 57.09 ± 0.01 | 5.93 ± 0.02 | −1.96 ± 0.01 | 0.362 | ||||||||
| (9, 9) | −0.227 ± 0.001 | 57.22 ± 0.01 | 5.54 ± 0.03 | −1.34 ± 0.01 | 0.346 | ||||||||
| (10, 10) | −0.150 ± 0.004 | 57.45 ± 0.06 | 4.38 ± 0.14 | −0.70 ± 0.03 | 0.258 | ||||||||
| (13, 13) | −0.072 ± 0.004 | 57.53 ± 0.12 | 3.87 ± 0.28 | −0.30 ± 0.03 | 0.369 | ||||||||
| CH3OH | −0.287 ± 0.006 | 57.72 ± 0.04 | 4.12 ± 0.09 | −1.30 ± 0.03 | 0.346 | ||||||||
| W51e2-E (protostar) | |||||||||||||
| J2000 19:23:43.9600 +014.30.34.500, 0.9″ × 0.9″, PA = 0deg | |||||||||||||
| (6, 6) | 0.044 ± 0.001 | 57.00 ± 0.12 | 14.5 ± 0.3 | 0.68 ± 0.02 | – | ||||||||
| (7, 7) | 0.046 ± 0.001 | 56.30 ± 0.10 | 10.9 ± 0.2 | 0.53 ± 0.02 | – | ||||||||
| (9, 9) | 0.023 ± 0.001 | 56.24 ± 0.19 | 11.6 ± 0.5 | 0.28 ± 0.02 | – | ||||||||
| (10, 10) | 0.020 ± 0.003 | 54.81 ± 0.70 | 8.74 ± 1.65 | 0.18 ± 0.05 | – | ||||||||
| (13, 13) | 0.036 ± 0.004 | 55.53 ± 0.27 | 4.63 ± 0.64 | 0.18 ± 0.03 | – | ||||||||
| CH3OH | 0.040 ± 0.003 | 56.48 ± 0.27 | 8.80 ± 0.65 | 0.37 ± 0.03 | – | ||||||||
| W51e2-NW (protostar) | |||||||||||||
| J2000 19:23:43.900 +014.30.35.980, 1.3″ × 2″, PA = 0deg | |||||||||||||
| (6, 6) | 0.099 ± 0.002 | 55.72 ± 0.08 | 10.7 ± 0.2 | 1.12 ± 0.03 | – | ||||||||
| (7, 7) | 0.075 ± 0.002 | 55.24 ± 0.09 | 7.72 ± 0.22 | 0.62 ± 0.02 | – | ||||||||
| (9, 9) | 0.028 ± 0.002 | 55.64 ± 0.30 | 7.36 ± 0.70 | 0.22 ± 0.03 | – | ||||||||
| (10, 10) | − | − | − | − | – | ||||||||
| (13, 13) | − | − | − | − | – | ||||||||
| CH3OH | 0.084 ± 0.004 | 55.46 ± 0.16 | 6.8 ± 0.4 | 0.61 ± 0.03 | – | ||||||||
| W51e2-E+NW (entire core) | |||||||||||||
| (6, 6) | 0.432 ± 0.003 | 55.38 ± 0.04 | 10.7 ± 0.2 | 4.90 ± 0.06 | – | ||||||||
| (7, 7) | 0.310 ± 0.004 | 55.53 ± 0.05 | 8.57 ± 0.1 | 2.82 ± 0.05 | – | ||||||||
| (9, 9) | 0.099 ± 0.004 | 55.90 ± 0.20 | 8.98 ± 0.5 | 0.94 ± 0.07 | – | ||||||||
| (10, 10) | 0.059 ± 0.007 | 54.32 ± 0.8 | 13.0 ± 2 | 0.82 ± 0.16 | – | ||||||||
| (13, 13) | 0.069 ± 0.012 | 55.77 ± 0.43 | 5.1 ± 1.0 | 0.38 ± 0.10 | – | ||||||||
| CH3OH | 0.444 ± 0.010 | 55.6 ± 0.1 | 8.3 ± 0.2 | 3.92 ± 0.09 | – | ||||||||
| W51e8 | |||||||||||||
| J2000 19:23:43.9076 +014.30.28.068, 3.1″ × 4.3″, PA = 0deg | |||||||||||||
| (6, 6) | 0.279 ± 0.003 | 59.06 ± 0.07 | 12.39 ± 0.17 | 3.67 ± 0.07 | – | ||||||||
| (7, 7) | 0.190 ± 0.004 | 59.73 ± 0.11 | 11.20 ± 0.26 | 2.27 ± 0.07 | – | ||||||||
| (9, 9) | 0.083 ± 0.005 | 59.65 ± 0.31 | 11.20 ± 0.73 | 0.99 ± 0.09 | – | ||||||||
| (10, 10) | 0.059 ± 0.009 | 60.60 ± 0.92 | 12.36 ± 2.17 | 0.78 ± 0.18 | – | ||||||||
| (13, 13) | 0.063 ± 0.012 | 59.82 ± 1.24 | 13.28 ± 2.93 | 0.88 ± 0.26 | – | ||||||||
| CH3OH | 0.260 ± 0.009 | 58.43 ± 0.14 | 7.82 ± 0.32 | 2.16 ± 0.08 | – | ||||||||
Notes. The peak fluxes (Fpeak, Col. 2), the central velocities (Vc; Col. 3), the FWHM line width (ΔV1/2; Col. 4), and the velocity-integrated flux (Fint; Col. 5) are estimated from single-Gaussian fits to the spectral profiles of the main lines. The table also reports the continuum emission flux density at the corresponding frequency of the inversion lines seen in absorption (Fcont; Col. 6).
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