Table 2
NH3(1, 1) line parameters.
| Region | Positiona | V LSR b | TMB(m)c | ΔVd | τ m e | A τ m f | N(1,1)g |
| (arcmin) | (km s-1) | (K) | (km s-1) | (K) | (1013 cm-2) | ||
|
|
|||||||
| M120.1+3.0-N | (2.8,1.4) | −18.78 ± 0.02 | 0.89 ± 0.07 | 0.90 ± 0.05 | 1.7 ± 0.3 | 1.9 ± 0.1 | 4.7–16.4 |
| (0,0) | −20.23 ± 0.01 | 0.65 ± 0.04 | 1.18 ± 0.04 | 1.0 ± 0.1 | 1.06 ± 0.05 | 3.5–12.2 | |
| M120.1+3.0-S | (0,0) | −17.41 ± 0.02 | 0.57 ± 0.05 | 1.10 ± 0.05 | 0.8 ± 0.2 | 0.83 ± 0.07 | 2.5–9.0 |
| L1287 | (0,0) | −17.63 ± 0.05 | 2.51 ± 0.05 | 1.77 ± 0.01 | 0.90 ± 0.03 | 3.80 ± 0.04 | 18.7–30.9 |
| L1293 | (0,0) | −17.67 ± 0.01 | 1.06 ± 0.05 | 0.79 ± 0.03 | 0.7 ± 0.2 | 1.7 ± 0.1 | 3.6–7.7 |
| NGC 281 A-W | (0,0) | −30.32 ± 0.04 | 0.54 ± 0.07 | 2.2 ± 0.1 | 1.3 ± 0.3 | 0.93 ± 0.07 | 5.6–27.0 |
| HH 156 | (0, 0) | – | ≤ 0.2 | – | – | – | – |
| HH 159 | (0, 0) | – | ≤ 0.4 | – | – | – | – |
| HH 158 | (0, 0) | – | ≤ 0.3 | – | – | – | – |
| HH 31 | (− 7,0) | +6.86 ± 0.01 | 2.2 ± 0.1 | 0.42 ± 0.01 | 2.6 ± 0.2 | 6.7 ± 0.3 | 7.7–16.1 |
| HH265 | (− 1.4,1.4) | +6.68 ± 0.01 | 1.9 ± 0.1 | 0.40 ± 0.02 | 2.5 ± 0.3 | 5.7 ± 0.4 | 6.3–14.0 |
| L1551 NE | (0,0) | +6.64 ± 0.02 | 0.79 ± 0.09 | 0.47 ± 0.03 | 5.0 ± 0.8 | 3.5 ± 0.4 | 4.6–22.6 |
| L1642 | (0,0) | – | ≤ 0.1 | – | – | – | – |
| L1634 | (1.4,0) | +8.00 ± 0.01 | 1.4 ± 0.1 | 0.81 ± 0.04 | 0.6 ± 0.2 | 2.0 ± 0.2 | 4.6–8.5 |
| HH 59 | (0,0) | – | ≤ 0.3 | – | – | – | – |
| IRAS 05358 | (0,0) | −16.89 ± 0.01 | 1.44 ± 0.05 | 2.32 ± 0.03 | 0.67 ± 0.07 | 1.95 ± 0.05 | 12.6–24.6 |
| L1641-S3 | (0,0) | +4.96 ± 0.01 | 2.0 ± 0.1 | 0.68 ± 0.04 | 1.3 ± 0.3 | 3.9 ± 0.3 | 7.4–14.4 |
| (−2.8,0) | +3.76 ± 0.01 | 1.8 ± 0.2 | 0.30 ± 0.02 | 3.3 ± 0.5 | 7.0 ± 0.3 | 5.8–13.2 | |
| HH 68 | (0,0) | – | ≤ 0.3 | – | – | – | – |
| CB 34 | (0,0) | +0.72 ± 0.02 | 0.77 ± 0.06 | 1.37 ± 0.06 | 0.4 ± 0.2 | 0.99 ± 0.07 | 3.8–8.3 |
| HH 270/110 | (0,0) | +8.86 ± 0.02 | 0.67 ± 0.06 | 0.65 ± 0.04 | 1.3 ± 0.3 | 1.3 ± 0.1 | 2.4–8.9 |
| (− 2.8,0) | +8.70 ± 0.03 | 0.8 ± 0.1 | 0.8 ± 0.1 | 0.4 ± 0.5 | 1.1 ± 0.2 | 2.6–4.8 | |
| IRAS 05490 | (0,0) | +0.78 ± 0.03 | 0.41 ± 0.05 | 1.5 ± 0.1 | 0.1 ± 0.4 | 0.45 ± 0.02 | 1.9–3.0 |
| HH 111 | (0,0) | +8.72 ± 0.02 | 0.56 ± 0.06 | 0.78 ± 0.08 | 0.4 ± 0.3 | 0.7 ± 0.1 | 1.6–3.9 |
| HH 113 | (0,0) | – | ≤ 0.4 | – | – | – | – |
| AFGL 5173 | (0,0) | – | ≤ 0.2 | – | – | – | – |
| CB 54 | (0,0) | +19.55 ± 0.01 | 0.73 ± 0.04 | 1.14 ± 0.04 | 0.8 ± 0.2 | 1.11 ± 0.06 | 3.5–10.8 |
| L1709 | (0,0) | – | ≤ 0.4 | – | – | – | – |
| L379 | (0,0) | +18.89 ± 0.01 | 2.87 ± 0.05 | 2.84 ± 0.02 | 1.86 ± 0.03 | 5.98 ± 0.05 | 47.2–87.9 |
| L588 | (0,0) | +10.86 ± 0.02 | 1.3 ± 0.1 | 0.58 ± 0.04 | 2.4 ± 0.4 | 3.5 ± 0.3 | 5.6–16.4 |
| CB 188 | (0,0) | – | ≤ 0.2 | – | – | – | – |
| L673 | (0, − 1.4) | +7.11 ± 0.01 | 2.5 ± 0.1 | 0.41 ± 0.1 | 2.5 ± 0.3 | 7.5 ± 0.4 | 8.4–16.3 |
| HH221 | (0,0) | – | ≤ 0.2 | – | – | – | – |
| L797 | (0,0) | – | ≤ 0.2 | – | – | – | – |
| IRAS 20050 | (0, −1.4) | +6.86 ± 0.02 | 1.7 ± 0.2 | 0.93 ± 0.04 | 3.4 ± 0.3 | 5.6 ± 0.4 | 14.4–38.7 |
| (− 1.4,1.4) | +5.06 ± 0.02 | 1.8 ± 0.2 | 0.96 ± 0.04 | 0.8 ± 0.2 | 2.6 ± 0.2 | 7.1–13.1 | |
| V1057 Cygh | (0,0) | +4.30 ± 0.04 | 0.3 ± 0.1 | 0.58 ± 0.09 | ≤ 3i | 0.3 − 0.7j | 0.5–14.5 |
| CB 232 | (0,0) | +12.32 ± 0.02 | 0.58 ± 0.05 | 0.68 ± 0.04 | 1.8 ± 0.3 | 1.3 ± 0.1 | 2.5–11.8 |
| IC 1396E | (0,0) | +0.53 ± 0.02 | 0.86 ± 0.05 | 1.89 ± 0.04 | 0.8 ± 0.1 | 1.22 ± 0.05 | 6.1–16.6 |
| L1165 | (0,0) | −1.64 ± 0.04 | 0.35 ± 0.08 | 0.6 ± 0.1 | 3 ± 1 | 0.9 ± 0.2 | 1.6–13.4 |
| IRAS 22134 | (0,0) | −18.62 ± 0.04 | 0.55 ± 0.09 | 1.2 ± 0.1 | 0.4 ± 0.4 | 0.7 ± 0.1 | 2.3–6.0 |
| L1221 | (0,0) | −4.36 ± 0.01 | 2.5 ± 0.1 | 0.71 ± 0.01 | 2.1 ± 0.1 | 6.1 ± 0.2 | 12.1–23.4 |
| L1251k | (0,0) | – | ≤ 0.2 | – | – | – | – |
| NGC 7538 | (0, − 1.4) | −56.22 ± 0.02 | 1.9 ± 0.1 | 3.57 ± 0.05 | 0.35 ± 0.06 | 2.32 ± 0.06 | 23.1–32.8 |
Notes..
Position of the emission peak, where line parameters were obtained (in offsets from the position given in Table 1).
Main beam brightness temperature of the main line of the transition, obtained from a single Gaussian fit. For undetected sources a 3σ upper limit is given.
Intrinsic line width, obtained taking into account optical depth and hyperfine broadening, but not the spectral resolution of the spectrometer.
Optical depth of the main line derived from the relative intensities of the magnetic hyperfine components.
Derived from the transfer equation, where A = f [J(Tex) − J(Tbg)] is the “amplitude” (Pauls et al. 1983), f is the filling factor, Tex is the excitation temperature of the transition, Tbg is the background radiation temperature and J(T) is the intensity in units of temperature. Note that A ≃ fTex, for Tex ≫ Tbg
Beam-averaged column density for the rotational level (1,1). Upper limit is
obtained from 
where Tex is derived from the transfer equation assuming a filling factor f = 1. If Tex ≫ Tbg the beam averaged column density is proportional to the “amplitude” A, and the explicit dependence on Tex disappears, reducing to
providing the lower limit for the beam-averaged column density (e.g., Ungerechts et al. 1986)
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