Table 2
Properties of the filaments F1–F8.
| Fila- | Mass | ⟨ N ⟩ | ⟨ n ⟩ | ⟨ T ⟩ | l | M l | M l,crit | Δvgrad | t l | Ṁ |
| ment | (M) | (1021 cm-2) | (104 cm-3) | (K) | (pc) | (M/pc) | (M/pc) | (km s-1) | (105 yr) | (10-4 M/yr) |
|
|
||||||||||
| F1 | 24–48 | 22 | 2.7 | 18 (1.9) | 0.77 | 31–62 | 31 | 2.1 | 2.3 | 2.1 |
| F2 | 37–73 | 21 | 1.7 | 19 (2.9) | 1.6 | 24–47 | 31 | 2.6 | 3.7 | 2.0 |
| F3 | 33–66 | 29 | 3.4 | 18 (1.6) | 0.58 | 55–110 | 30 | 1.4 | 2.6 | 2.5 |
| F4 | 26–52 | 44 | 5.1 | 20 (1.3) | 0.55 | 48–95 | 33 | 2.2 | 1.6 | 3.3 |
| F5 | 16–32 | 17 | 2.8 | 19 (0.6) | 0.78 | 21–41 | 31 | 1.3 | 3.8 | 0.8 |
| F6 | 24–48 | 23 | 2.9 | 16 (1.0) | 0.75 | 32–64 | 26 | 1.5 | 3.1 | 1.6 |
| F7 | 16–31 | 12 | 1.3 | 15 (0.4) | 1.2 | 13–26 | 25 | 1.3 | 5.6 | 0.5 |
| F8 | 29–58 | 16 | 1.3 | 16 (0.7) | 1.1 | 27–53 | 27 | 1.7 | 4.0 | 1.4 |
Notes. Columns are: total mass within the polygon defining the filament from Herschel H2 column density map (both lower and upper limit are given); ⟨ N ⟩, mean column density from Herschel; ⟨ n ⟩, mean H2 density derived from N/r with the beam deconvolved equivalent radius 
; ⟨ T ⟩, mean temperature; l, projected length; Ml, mass/length value from M/l given in Cols. 2 and 6 (both lower and upper limit are given); Ml,crit, critical mass/length derived from Eq. (3); Δvgrad, velocity gradient of the filament estimated from the C18O channel map, relative to the observer; tl, dynamical lifetime; Ṁ, mass infall rate.
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