Table 2
Physical properties of the two hubs.
| Source | Nmm (a) | M0.15pc (b) | n0.15pc (b) | σ1D,nth (c) | ⟨ PA ⟩ (d) | σPA (d) | BDCF (e) |  (f) |
BP-IG (g) | λDCF∕mod∕P-IG (h) |  (h) |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (M⊙) | (× 105 cm−3) | (km s−1) | (°) | (°) | (mG) | (mG) | (mG) | |||||
| Hub-N | 4 | 126 | 1.3 | 0.83 ± 0.04 | ~102 | ~7.8 | ~0.8 | ~0.7 | ~0.6 | 0.3 / 0.4 / 0.4 | 0.3 / 0.4 / 0.4 | |
| Hub-S | 13 | 105 | 1.1 | 0.88 ± 0.02 | ~84 | ~29 | ~0.2 | ~ 0.1 | – | 1.1 / 1.6 | 1.1 / 1.6 |
Notes. (a) Nmm is the number of fragments detected at 1.3 mm within a field of view of 0.3 pc of diameter (Busquet et al. 2016). (b) Mass and average density within a radius of 0.15 pc inferred by modeling the SED and the radial intensity profile (Busquet et al. 2016). (c) Nonthermal turbulent component of the velocity dispersion obtained from NH3 (1,1) data, averaged over the 0.15 pc area (Busquet et al. 2013, 2016). (d) Average magnetic field position angle and dispersion computed as the standard deviation. (e) Magnetic field in the plane of the sky estimated using the DCF method. (f)Magnetic field in the plane of the sky estimated using the modified DCF method (Heitsch et al. 2001). (g) Magnetic field in the plane of the sky estimated using the polarization–intensity gradient method (Koch et al. 2012a) (h) Mass-to-magnetic-flux ratio and Alfvén Mach number estimated using BDCF,
, and
BP-IG.
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