Table 5
Parameters from 30 m and APEX observations and estimates based on two hypotheses of fragmentation (thermal Jeans fragmentation and turbulent Jeans fragmentation).
Source | Δυ a | σ obs a | T 30 m | σ th | σ Nth | n c b | λ th−J c | M th−J c | λ Nth−J d | M Nth−J d | λ cl eg | M cl eg | (M/l)cl eg | (M/l)ATLAS fg | Con.h |
(km s-1) | (km s-1) | (K) | (km s-1) | (km s-1) | (105 cm-3) | (pc) | (M⊙) | (pc) | (M⊙) | (pc) | (M⊙) | M⊙ pc-1 | M⊙ pc-1 | ||
|
|||||||||||||||
12 | 0.14 | 1.29 ± 0.03 | 1.07 | 0.07 | 1.16 | 0.45 | 291 | 1.57 | 1240 | 1690 ± 481 | |||||
G28.34 S | 3.07 ± 0.06 | 1.30 ± 0.03 | 15 | 0.15 | 1.29 ± 0.03 | 0.72 | 0.10 | 1.97 | 0.55 | 354 | 1.91 | 1510 | 788 | 1146 ± 326 | 0.63 ± 0.04 |
18 | 0.17 | 1.29 ± 0.03 | 0.54 | 0.12 | 2.99 | 0.63 | 409 | 2.21 | 1740 | 858 ± 244 | |||||
|
|||||||||||||||
12 | 0.14 | 0.84 ± 0.03 | 0.79 | 0.08 | 1.34 | 0.34 | 94.60 | – | – | – | – | ||||
18530 | 2.01 ± 0.06 | 0.85 ± 0.03 | 15 | 0.15 | 0.84 ± 0.03 | 0.54 | 0.11 | 2.28 | 0.41 | 115 | – | – | – | – | 0.62 ± 0.04 |
18 | 0.17 | 0.84 ± 0.03 | 0.40 | 0.14 | 3.47 | 0.48 | 133 | – | – | – | – | ||||
|
|||||||||||||||
12 | 0.14 | 0.86 ± 0.04 | 0.85 | 0.08 | 1.30 | 0.34 | 97.10 | – | – | – | – | ||||
18306 | 2.05 ± 0.10 | 0.87 ± 0.04 | 15 | 0.15 | 0.86 ± 0.04 | 0.57 | 0.11 | 2.21 | 0.41 | 118 | – | – | – | – | 0.64 ± 0.07 |
18 | 0.17 | 0.85 ± 0.04 | 0.43 | 0.14 | 3.36 | 0.47 | 136 | – | – | – | – | ||||
|
|||||||||||||||
12 | 0.14 | 0.88 ± 0.04 | 0.52 | 0.10 | 1.67 | 0.44 | 132 | 1.54 | 561 | 391 ± 34 | |||||
18308 | 2.09 ± 0.09 | 0.89 ± 0.04 | 15 | 0.15 | 0.87 ± 0.04 | 0.35 | 0.14 | 2.83 | 0.53 | 160 | 1.87 | 681 | 365 | 265 ± 23 | 0.60 ± 0.07 |
18 | 0.17 | 0.87 ± 0.04 | 0.26 | 0.18 | 4.30 | 0.62 | 185 | 2.16 | 787 | 198 ± 17 |
Notes.
Measured from H13CO+ (1 → 0) in a 40′′× 40′′ region (from [20′′, 20′′] to [−20′′, −20′′] offset, corresponding to ~1.5 × 105 AU) obtained from 30 m observations.
Thermal Jeans length (λth−J) and mass (Mth−J) are predicted from ATLASGAL dust emission at 870 μm.
Turbulent Jeans length (λNth−J) and mass (MNth−J) are predicted from 30 m observations on H13CO+ (1 → 0).
The critical mass and length of cylindrical fragmentation are predicted from 30 m observations on the velocity dispersion of H13CO+ (1 → 0), Eqs. (12)–(14).
The linear mass densities at different dust temperatures (assuming TATLAS = T30 m) are predicted from ATLASGAL dust emission at 870 μm.
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