The diversity of methanol maser morphologies from VLBI observations

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Volume 502 / No 1 (July IV 2009)

A&A, 502 1 (2009) 155-173

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Table 9:

Parameters derived by fitting kinematics of the rotating and expanding disc model.
Source	$V_{\rm rot}$	$V_{\rm exp}$	$V_{\rm sys}$	i	$\chi_{\rm V}^2$
	(km s^-1)	(km s^-1)	(km s^-1)	( $^\circ$ )
G23.207-00.377	-1.17	+3.96	79.46	-69	168
G23.389+00.185	-1.26	-1.71	74.91	+54	101
G23.657-00.127	+7.29	-2.61	81.90	+16	641
G24.634-00.324	+8.64	-2.25	38.96	+71	544
G25.411+00.105	+0.09	-1.17	95.84	+47	206
G26.598-00.024	+0.81	-0.81	24.58	-55	30
G31.047+00.356	+ $4\times 10^{-7}$	-2.43	80.68	-61	211
G33.980-00.019	-0.45	+2.97	61.86	-62	123
G34.751-00.093	-1.17	-2.88	51.17	+53	22

The signs + and - of the rotation and expansion velocities refer to the clockwise or anti-clockwise rotation and outflow or inflow for positive i. Both rotation and flow are reversed in a case of negative i. For each source, both signs together with the sign of i could be reversed since our model does not give the directions unambiguously.

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