| a |
|
|
|
N(HCO+) | 
|
| Source | (km s-1) | (km s-1) | (1012 cm-2) | (1020 cm-2) | |
| G05.88-0.39 | -4.92 | 1.13 
0.15
|
0.09
0.01
|
0.13
0.03
|
|
| G08.67-0.36 | 9.82 | 0.95
0.12
|
1.60
0.28
|
2.02
0.58
|
|
| 11.71 | 1.40
0.17
|
1.65
0.28
|
3.08
0.90
|
||
| 14.52 | 2.00
0.18
|
1.41
0.18
|
3.74
0.83
|
||
| 17.76 | 1.17
0.22
|
0.87
0.20
|
1.34
0.56
|
||
| 20.00 | 2.55
0.63
|
1.08
0.16
|
3.65
1.45
|
||
| 22.00 | 1.02
0.58
|
0.24
0.17
|
0.32
0.41
|
||
| G10.62-0.38 | 11.62 | 1.10
0.12
|
0.43
0.04
|
0.62
0.12
|
|
| 16.38 | 2.35
0.10
|
2.23
0.14
|
6.84
0.74
|
||
| 19.00 | 2.13
0.20
|
1.50
0.09
|
4.18
0.64
|
||
| 22.20 | 2.70
0.27
|
1.57
0.13
|
5.57
1.00
|
||
| 22.95 | 1.15
0.45
|
0.82
0.18
|
1.23
0.75
|
||
| 24.98 | 1.65
0.10
|
0.70
0.06
|
1.51
0.21
|
||
| 27.50 | 2.58
0.17
|
1.61
0.11
|
5.46
0.74
|
||
| 29.00 | 1.53
0.52
|
0.78
0.20
|
1.56
0.93
|
||
| 30.50 | 1.52
0.32
|
2.09
0.27
|
4.13
1.39
|
||
| 40.91 | 2.60
0.10
|
2.33
0.14
|
7.93
0.78
|
||
| 44.94 | 1.22
0.05
|
1.30
0.07
|
2.06
0.21
|
||
| 46.40 | 0.60
0.10
|
0.26
0.04
|
0.20
0.07
|
||
| G34.3+0.1 | 9.80 | 0.53
0.22
|
0.38
0.12
|
0.27
0.19
|
|
| 10.60 | 0.57
0.12
|
1.86
0.61
|
1.38
0.72
|
||
| 11.70 | 1.37
0.18
|
1.82
0.39
|
3.34
1.14
|
||
| 14.07 | 0.37
0.08
|
0.77
0.23
|
0.38
0.20
|
||
| 27.00 | 1.02
0.13
|
1.19
0.20
|
1.61
0.47
|
||
| 27.75 | 1.83
0.32
|
0.45
0.09
|
1.10
0.41
|
||
| 48.30 | 2.23
0.20
|
0.94
0.10
|
2.80
0.54
|
||
| W49N | 33.20 | 0.65
0.03
|
0.44
0.02
|
0.34
0.02
|
3.0 |
| 33.70 | 2.23
0.03
|
0.63
0.01
|
1.67
0.02
|
10.5 | |
| 36.50 | 1.67
0.12
|
0.29
0.01
|
0.60
0.03
|
7.8 | |
| 38.50 | 1.75
0.08
|
0.91
0.01
|
1.88
0.03
|
8.2 | |
| 39.70 | 1.47
0.02
|
2.01
0.03
|
3.47
0.05
|
6.9 | |
| 50.92 | 1.65
0.10
|
0.35
0.01
|
0.68
0.02
|
7.8 | |
| 53.40 | 1.23
0.10
|
0.30
0.02
|
0.43
0.03
|
5.8 | |
| 54.00 | 3.38
0.15
|
0.51
0.01
|
2.03
0.04
|
15.9 | |
| 56.70 | 2.35
0.07
|
0.69
0.01
|
1.91
0.03
|
11.0 | |
| 59.55 | 2.35
0.05
|
1.89
0.02
|
5.24
0.07
|
11.0 | |
| 60.80 | 0.88
0.05
|
0.77
0.05
|
0.80
0.06
|
4.1 | |
| 62.65 | 2.95
0.03
|
1.48
0.01
|
5.16
0.05
|
13.9 | |
| 66.21 | 1.85
0.07
|
0.19
0.01
|
0.41
0.01
|
8.7 | |
| 68.58 | 1.80
0.10
|
0.24
0.01
|
0.52
0.01
|
8.5 | |
| 71.11 | 2.25
0.20
|
0.07
0.00
|
0.19
0.01
|
10.6 | |
| W51 | 3.80 | 0.47
0.12
|
0.10
0.02
|
0.06
0.03
|
1.0 |
| 5.10 | 1.23
0.05
|
0.72
0.02
|
1.14
0.08
|
2.7 | |
| 6.25 | 0.65
0.03
|
1.05
0.06
|
0.87
0.10
|
1.4 | |
| 6.85 | 2.01
0.05
|
0.70
0.02
|
1.80
0.10
|
4.4 | |
| 12.71 | 1.67
0.18
|
0.10
0.01
|
0.20
0.04
|
3.7 | |
| b |
|
|
|
N(HCO+) | |
| Source | (km s-1) | (km s-1) | (km s-1) | (1012 cm-2) | |
| G10.62-0.38 | 13.6 | 15.2 | 0.77
0.08
|
0.94
0.10
|
|
| 31.0 | 33.0 | 3.77
0.31
|
4.63
0.38
|
||
| 33.3 | 34.7 | 1.81
0.15
|
2.23
0.18
|
||
| 34.7 | 36.0 | 1.74
0.16
|
2.13
0.19
|
||
| 36.0 | 37.5 | 3.10
0.29
|
3.82
0.36
|
||
| 37.5 | 40.0 | >6.27 | >7.71 | ||
| W49N | 41.0 | 47.0 | 0.90
0.03
|
1.00
0.04
|
Notes. (a) Multi-Gaussian
decomposition. The column densities are derived assuming the excitation
temperatures given in Table 3.
(b) Failure of the
multi-gaussian decomposition. Column densities are inferred from the
integral of the opacity assuming the excitation temperatures given in
Table 3. (c) Determined
from the average total hydrogen column density per unit velocity
and
4.7
cm-2/km
s-1 toward W51
and W49N respectively.
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