ξTauri: a unique laboratory to study the dynamic interaction in a compact hierarchical quadruple system

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Table 6

Orbital elements obtained by KOREL(spectral disentangling) for all available spectra containing at least one of the studied regions.

Elem.	Unit
orbit		1	2

P_AN	(d)	–	145.612 ± 0.056
P_S	(d)	7.14664 ± 0.00002	145.123 ± 0.072
T_min	(RJD-56 220)	4.6963 ± 0.0040	–
T _p	(RJD-56 000)	–	9.29 ± 1.44
K	(km s^-1 )	87.52 ± 0.59	37.55 ± 0.57
e		0¹	0.180 ± 0.024
q		0.943 ± 0.008	1.02 ± 0.27
ω	(deg)	90¹	8.52 ± 4.1
	(deg yr^-1)	0¹	3.032 ± 0.38

		1.19

Notes. The orbital model consists of orbits 1 and 2. K₁ refers to the primary of the eclipsing binary K^Aa and K₂ to the centre of gravity of the eclipsing binary K^{Aa + Ab}.

⁽¹⁾

The parameter was fixed.

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