A large Hα line forming region for the massive interacting binaries β Lyrae and υ Sagitarii

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Volume 532 (August 2011)

A&A, 532 (2011) A148

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Table 1

Journal of interferometric observations for υ Sgr and β Lyr.

Date	UT	JD	Orbital	Base	Projected baseline		Calibrators^b
	[h:mn]	2 450 000+	Phase^a		Length	PA
					[m]	[deg]

β Lyr
2008/07/30	04:48	4677.7003	0.496	S1S2	34.07	2.6	γ Lyr
2008/08/03	04:51	4681.7024	0.805	S1S2	34.07	−0.04	γ Lyr
2008/08/05	06:55	4683.7882	0.963	S1S2	34.01	−18.0	γ Lyr
′′	09:20	4683.8889	0.971	S1S2	32.62	−33.5	γ Lyr
2008/08/08	07:15	4686.8024	0.199	S1S2	33.90	−22.0	γ Lyr
′′	07:54	4686.8292	0.201	S1S2	33.65	−26.4	γ Lyr
2009/07/25	04:34	5037.6904	0.312	S1S2	34.08	6.6	γ Lyr
′′	08:59	5037.8745	0.326	S1S2	33.51	−28.0	γ Lyr
2009/07/26	09:20	5038.8891	0.404	E1E2	58.62	−156.0	γ Lyr

υ Sgr
2008/08/03	06:34	4681.7736	0.058	S1S2	23.0	−16.4	γ Sct, ν Cap
	07:48	4681.8250	′′	W1W2	106.7	96.8	γ Sct, ν Cap
2008/08/07	06:12	4685.7583	0.087	S1S2	22.7	−14.5	γ Sct, ν Cap
2008/08/08	04:38	4686.6930	0.093	W1W2	91.5	84.8	γ Sct
	05:23	4686.7243	′′	W1W2	100.7	88.2	γ Sct
2009/07/27	04:25	5039.6840	0.653	S1S2	22.8	+15.5	γ Sct
2009/07/27	07:24	5039.8083	′′	S1S2	23.9	−21.1	γ Sct

Notes.

^(a)

Computed orbital phase: for υ Sgr from KHY, Eq. (1); for β Lyr from Ak et al. (2007), Eq. (2).

^(b)

Calibrator angular diameters (mas): γ Sgr (HD170296) = 0.44 ± 0.03; ν Cap (HD 193432) = 0.30 ± 0.02 from SearchCal@JMMC; γ Lyr = 0.742 ± 0.097 from Legett et al. (1986).

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