The quest for stable circumbinary companions to post-common envelope sdB eclipsing binaries - Does the observational evidence support their existence?

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Volume 611 (March 2018)

A&A, 611 (2018) A48

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Table 4

Comparison of the LTT effect from a linear or quadratic baseline with 1σ uncertainty levels.

Object	Measurement	(O–C) Lin	(O–C) Quad	No of σ	No of σ	Bours
	uncertainty	(days)	(days)	(lin)	(quad)	weighted
	(days)					RMS
EC 10246-2707	0.0000846	0.0000983	0.0000800	1.16	0.95	1.60
HS 0705+6700	0.0001263		0.0007412		5.87	19.89
HS 2231+2441	0.0001671	0.0004178	0.0004031	2.50	2.41	2.47
J08205+0008	0.0001256	0.0001177	0.0001140	0.94	0.91	1.13
NSVS 07826147	0.0000542	0.0001155	0.0001144	2.13	2.11	2.41
NSVS 14256825	0.0000387	0.0003867		10.0		20.95
NY Vir	0.0000313	0.0001413		4.51		4.78∕
						36.45

Notes. The Bours’ weighted statistic is shown for comparison where NY Vir shows two values, one for the exclusion and the other for the inclusion of Zorotovic’s two ULTRACAM low uncertainty observations.

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