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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