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Table 2

Fiber properties in molecular clouds.

ISF1 OMC-11 OMC-21 NGC13332 B213-L14953,⋆ Musca 4,#
Region Orion Orion Orion Perseus Taurus Musca
Distance (pc) 414 414 414 236 140 140
Mass range High-mass High-mass Intermediate Intermediate/Low Low Low
Mode Clustered Clustered Clustered Clustered Isolated Isolated
Mlin(total) (M pc−1) ~500(6,7) ~500(6,7) ~500(6,7) ~200 ~50(8) ~25(5)
Observations ALMA ALMA ALMA IRAM 30m FCRAO APEX
θFWHM (″) 4.5 4.5 4.5 30 60 28.5
Resolution (pc) 0.009 0.009 0.009 0.034 0.040 0.019
# Fertile fibers 55 28 27 14 7 1
Size (pc) 2.5 × 0.48 1.0 × 0.48 1.5 × 0.48 2.0 × 0.4 10.0 × 1.0 6.5 × 0.5
Area (pc2) 1.2 0.48 0.72 0.8 10 3.25
Σ(fertile) (pc−2) 45.8 58.3 37.5 17.5 0.7 0.3
FWHM (pc) ~0.02–0.05 ~0.02–0.05 ~0.02–0.05 ~0.1 ~0.1(8) 0.07(5)
〈Length〉 (pc) 0.16 ± 0.10 0.15 ± 0.09 0.16 ± 0.11 0.4 ± 0.2 1.0 ± 0.2 6.5
Mlin〉 (M pc−1) 23±11 20 ± 18 26 ± 21 34 ± 22 24 ± 19 26
n(H2)〉 (cm−3) 1.0 × 108 0.8 × 108 1.2 × 108 ~5 × 105 ~105 ~104
TK〉 (K) 24.7 ± 6.7 28.9 ± 7.1 20.4 ± 1.5 ~10 ~10 ~10
σNT/cs(TK)〉 0.77 ± 0.25 0.89 ± 0.28 0.65 ± 0.13 1.0 ± 0.3 1.1 ± 0.3 0.7
〈▽VLSR|global〉 (km s−1 pc−1) 4.6 ± 5.9 6.5 ± 7.4 2.6 ± 2.3 0.8 ± 0.8 0.4 ± 0.4 0.3
〈▽VLSR|local〉 (km s−1 pc−1) 12.8 ± 7.7 16.1 ± 9.2 9.5 ± 3.3 1.5 ± 0.6 1.3 ± 0.5 ~1–2

Notes. The values listed in this table correspond to the mean and 1-σ dispersion in each case. We notice that not all the above parameters can be described by a normal distributions so the use of a gaussian dispersion is only indicative of the observed varability. References: (1)This work; (2)Hacar et al. (2017b); (3)Hacar et al. (2013); (4)Hacar et al. (2016); (5)Kainulainen et al. (2016); (6)Bally et al. (1987); (7)Johnstone & Bally (1999); (8)Palmeirim et al. (2013); (⋆)Only fertile fibers detected in N2 H+ are considered. (#)Assumed as single fertile fiber (see Hacar et al. 2016, for a discussion).

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