Molecules, shocks, and disk in the axi-symmetric wind of the MS-type AGB star RS Cancri

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Table 3

Parameters of the best-fit model for CO.

Region	v_term	r_1∕2	T₀	r₀	Opening angle	σ(ρ)	σ(v)	ρ₀(¹²CO)	ρ₀(¹³CO)
	(km s⁻¹)	(arcsec)	(K)	(arcsec)	(FWHM) (deg)			(cm⁻³)	(cm⁻³)
Equator	3.5 ± 0.7	0.6 ± 0.2	100	2.0	30	0.21 ± 0.03	>0.4	86 ± 10	4.2 ± 0.4
Poles	8.6 ± 0.5	0.29 ± 0.10	130	2.0	70	0.50 ± 0.02	0.70 ± 0.04	70 ± 6	2.9 ± 0.4

Notes. The quoted uncertainties correspond to a 10% increase in the best fit χ², leaving all other parameters fixed at their best-fit value: they should not be understood as uncertainties but as indicators of the sensitivity of the quality of the fit to each separate parameter.

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