Table 6:
Results of the escape probability analysis using the four observed line ratios
12CO 3-2/2-1, 12CO 2-1/1-0, 12CO/13CO 1-0, and 2-1.
N(CO) is the total CO column density per 80'' beam. M is the total mass integrated over
the beam and assuming an abundance ratio of [CO]/[H2] =
(Frerking et al. 1982).
is the average density assuming that emission stems from a sphere with beam diameter.
 |
 |
 |
 |
N(CO) |
N(CO) |
M |
 |
['', ''] |
|
[cm-3] |
[K] |
[1016 cm-2/km s-1] |
[1016 cm-2] |
[106 ] |
[cm-3] |
M 83: |
|
|
|
|
|
|
|
(0, 0) |
1.7 |
3000. |
15.0 |
3.2 |
15.79 |
65.16 |
0.42 |
(-80, -72) |
3.5 |
3000. |
12.5 |
3.2 |
7.58 |
31.29 |
0.20 |
(89, 38) |
2.1 |
3000. |
12.5 |
3.2 |
6.69 |
27.60 |
0.18 |
M 51: |
|
|
|
|
|
|
|
(0, 0) |
3.6 |
30000. |
12.5 |
3.2 |
17.41 |
484.67 |
0.18 |
(72, 84) |
4.0 |
3000. |
15.0 |
3.2 |
2.07 |
57.76 |
0.02 |
(-84, -84) |
7.4 |
10000. |
12.5 |
3.2 |
5.46 |
151.89 |
0.06 |
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