A VLT/FLAMES survey for massive binaries in Westerlund 1 - II. Dynamical constraints on magnetar progenitor masses from the eclipsing binary W13

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Volume 520 (September-October 2010)

A&A, 520 (2010) A48

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Table 1:

Journal of observations.
Date	MJD^a	Phase^b	Elapsed orbits^b	RV $_{\rm abs}$ (km s^-1)	RV $_{\rm em}$ (km s^-1)
29/06/2008	54 646.1846	0.33	0.33	+54 $\pm$ 9	-232 $\pm$ 7
18/07/2008	54 665.0356	0.37	2.37	+39 $\pm$ 8	-246 $\pm$ 18
24/07/2008	54 671.1343	0.03	3.03	-50 $\pm$ 11	-
14/08/2008	54 692.0423	0.28	5.28	+74 $\pm$ 13	-224 $\pm$ 14
04/09/2008	54 713.0107	0.55	7.55	-120 $\pm$ 5	+127 $\pm$ 29^c
15/09/2008	54 724.0818	0.74	8.74	-200 $\pm$ 9	+163 $\pm$ 11
19/09/2008	54 728.0554	0.17	9.17	+56 $\pm$ 4	-225 $\pm$ 17
25/09/2008	54 734.0613	0.82	9.82	-173 $\pm$ 7	+164 $\pm$ 9
14/05/2009	54 965.1768	0.76	34.76	-214 $\pm$ 14	+137 $\pm$ 8
18/05/2009	54 969.3198	0.21	35.21	+76 $\pm$ 13	-242 $\pm$ 7
20/08/2009	55 063.0575	0.32	45.32	+78 $\pm$ 11	-217 $\pm$ 16

Notes. ^(a) Modified Julian day at the midpoint of two 600 s integrations (2 $\times$ 500 s, 04/09/2008; 1 $\times$ 600 s + 1 $\times$ 700 s, 19/09/2008). ^(b) Phase taking T₀ = 54 643.080, elapsed orbits for an orbital period of 9.271d (see Sect. 3.2). ^(c) Unreliable due to the appearance of a central reversal in the emission line, and excluded from the fit to the RV curve.

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