Radio emission from the massive stars in the galactic super star cluster Westerlund 1

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Table 5:

Best-fit parameters of the r^-2 shell model applied to the continuum spectra of the compact and extended radio components of W9.
Model	Component	$\dot M$ $M_{\odot}$ yr^-1	$R_{\rm i}$	$R_{\rm o}$
		$(\times 10^{-5})$	(AU)	(AU)
1	Compact	$\rm 8.7^{+0.5}_{-0.2}$	0	$\rm 5800^{+7200}_{-1200}$
2	Extended	$\rm 17.6^{+0.5}_{-0.4}$	$\rm 1100^{+80}_{-90}$	$\infty$
3	Compact	$\rm 9.2^{+0.4}_{-0.5}$	0	$\rm 4000^{+3000}_{-900}$
3	Extended	$\rm 33^{+12}_{-5}$	$\rm 4000^{+3000}_{-900}$	$\infty$

Notes. Models 1 and 2 correspond to best-fits of each individual spectra. Model 3 assumes the outer radius of the compact component is equal to the inner radius of the extended component. For each model it is assumed that $T_{\rm e}=10$ kK, $v_\infty=200$ km s^-1,Z=0.9 $, \mu=1.5$ , $\gamma=0.8$ and the volume filling factor f=1.

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