Structure of the accretion flow of IX Velorum as revealed by high-resolution spectroscopy

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Table 3.

Moments of spectroscopic phase zero.

Cycle	HJD	Error	O−C	Ref.
	2400000+	(days)	(days)
−7158	45 334.69570	0.00632	0.00242	(1) ^(a)
−6895	45 385.70610	0.00675	0.00978	(2) ^(a)
0	46 722.83430	0.00091	0.00493	(3)
20	46 726.71850	0.00170	0.01058	(3)
603	46 839.78300	0.00328	0.01509	(3)
1870	47 085.48690	0.00201	0.01231	(3)
15 510	49 730.63940	0.00235 ^(b)	−0.01209	(4)
56 943	57 765.66715	0.00002	−0.00007	(5)
60 914	58 535.75493	0.00002	−0.00008	(5)
60 919	58 536.72481	0.00002	0.00016	(5)

Notes.

Errors refer to 1σ.

References. (1) Wargau et al. (1983), (2) Eggen & Niemela (1984), (3) Beuermann & Thomas (1990), (4) Kubiak et al. (1999), (5) this work.

^(a)

Times of the zeroth phase were determined by Beuermann & Thomas (1990) using data presented in referenced works.

^(b)

The error was not given by the authors; the value listed in the table was determined by least-squares fitting of the radial velocities published by authors.

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