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Table 2

Molecular components of the model for CRL 618.

Nebula Size Radial velocity Temperature Density Mass
component (cm) Vexp (km s-1) T (K) ρ (cm-3) M (M)

Halo R in  =  1.6 × 1016 7 + 10 [1 –(Rin/r)]1/2 115 (1016/r) + 5 1.2 ×  106 (1016/r)2 0.24
R out  =  1017
Ellipses M = major axis =  8.4 × 1016 10 [1 + (h / M)] 80 [1.1–1.05 (h/M)]106 0.04
minor axis =  4 × 1016
thickness =  2.6 × 1015
center =  ±4.2 × 1016
Fast outflow R out  =  0.9 × 1016 (a)  45 + 255 (h − 1016)/(hmax – 1016) 300 (1016/h) + 5 5.5 × 106 (1016/r)2 0.07
h max  =  2.8 × 1016 (b) 45 [1 + (h − 1016)/(1016)] 300 (1016/h) + 5 5.5 × 106 (1016/r)
Dense core R out  =  1.6 × 1016 7 (r/Rout) 120 2.7 × 106 (1016/r)3 0.05

Notes. r is the radial distance to the central star. h is the distance to the equator. (a) and (b) are the values for the cylindrical and conical regions of the high-velocity outflow.

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