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Table 5

Dynamical parameters of the core derived from the ammonia spectra (see text).

N(pNH3) ⟩ 1.1 × 1015 cm-2
Massa 2.2 M
Radius 23″, 3500 AU
C.M. Δα = 10″, Δδ =  −18″
nH2 1.6 × 106 cm-3
vLSR 4.60 km s-1
⟨ Δv 0.23 km s-1
Velocity gradient 20 km s-1 pc-1
(Ω ~ 6.5 × 10-13 s-1)
E therm 35 × 1034 J
E turb 2 × 1034 J
E rot 10 × 1034 J
E grav − 148 × 1034 J
| Egrav | / 2 Ekin 1.6
Erot/ | Egrav |, βrot 0.07
Specific angular momentumb, j 1.6 × 10-3km s-1 pc
=3.9 × 1020cm2 s-1

Notes. The values represent the region inside the region where N(1,1) > 5 × 1014 cm-2.

(a)

The assumed fractional para-ammonia abundance is X(pNH3) = 1.0 × 10-8.

(b)

The specific angular momentum is calculated with respect to the axis indicated with a yellow line in Fig. 10.

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