Table 3
Properties of the identified cores: virial mass, total mass from dust continuum emission, and average volume density.
| T = 10 K = const. |  |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Core id | Mvir | Mcore (a) | n(H2) | αvir |  (b) |
Mvir | Mcore (a) | n(H2) | αvir |
| (M⊙) | (M⊙) | (106 cm−3) | (K) | (M⊙) | (M⊙) | (106 cm−3) | |||
| AG351 | |||||||||
| 1 |  |
0.7 ± 0.2 | 6.2 |  |
5.0 |  |
4.7 ± 1.5 | 42.8 |  |
| 2 |  |
0.53 ± 0.17 | 6.4 |  |
6.1 |  |
1.9 ± 0.6 | 22.9 |  |
| 3 |  |
1.8 ± 0.6 | 7.6 |  |
5.0 |  |
13 ± 4 | 52.6 |  |
| 4 |  |
0.43 ± 0.14 | 5.1 |  |
5.4 |  |
2.2 ± 0.7 | 26.3 |  |
| 5 |  |
1.6 ± 0.5 | 2.3 |  |
5.0 |  |
11 ± 4 | 16.1 |  |
| 6 |  |
1.1 ± 0.4 | 3.5 |  |
11.0 |  |
0.9 ± 0.3 | 2.9 |  |
| 7 |  |
1.6 ± 0.5 | 4.6 |  |
5.0 |  |
11 ± 4 | 32.2 |  |
| AG354 | |||||||||
| 1 |  |
– | – | – | 5.0 |  |
– | – | – |
| 2 |  |
5.6 ± 1.8 | 7.3 |  |
5.0 |  |
39 ± 13 | 50.7 |  |
| 3 |  |
1.1 ± 0.4 | 2.8 |  |
6.2 |  |
3.8 ± 1.3 | 9.4 |  |
| 4 |  |
3.0 ± 1.0 | 2.5 |  |
8.5 |  |
4.3 ± 1.4 | 3.9 |  |
| 5 |  |
0.38 ± 0.12 | 3.6 |  |
20.0 |  |
0.11 ± 0.04 | 1.0 |  |
| 6 |  |
2.2 ± 0.7 | 2.7 |  |
20.0 |  |
0.7 ± 0.2 | 0.8 |  |
| 7 |  |
1.17 ± 0.17 | 5.5 |  |
20.0 |  |
0.34 ± 0.05 | 1.6 |  |
| 8 |  |
2.1 ± 0.7 | 3.0 |  |
7.9 |  |
3.7 ± 1.2 | 5.1 |  |
| 9 |  |
– | – | – | 6.8 |  |
– | – | – |
Notes.The first value set was computed under the assumption that Tgas = Tdust = 10 K; in the second half of the table, the quantities were computed using the minimum temperature derived from the
H2D+ thermal broadening. The temperature values used are listed in the fifth column.
(a) The uncertainties on the masses estimated from the continuum emission are 33% (relative error), to take into account uncertainties on parameters such as the dust opacity, on top of the flux error from the ALMA observations.
(b) 
is the minimum 
in each core computed through Eq. (5). It still represents, however, an upper limit on the real gas/dust temperature, since other components (non-thermal, instrumental, etc.) can contribute to the line broadening.
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