The spectroscopic orbits and physical parameters of GG Carinae

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Table 2

Orbital solutions of GG Car obtained from the HeI absorption lines λλ4471, 5875, 6678, and 7065 Å.

Comp.	P	K	γ ₀	e	ω	T_°¹	T_conj²	ΔT³	asini	Msin³i
	[days]	[km s^-1]	[km s^-1]		[deg]	[JD24...]	[JD24...]	[days]	[AU]	[M_⊙]


Prim.		65.8 ± 7.3							0.18 ± 0.02	18 ± 3
	31.033 ±		–162.1 ±	0.28 ±	272 ±	52020.96	52051.93	2.44
	0.008		4.3	0.06	12
Sec.		143.3 ± 8.7							0.39 ± 0.02	8 ± 2

Notes. T_{phot − min} = 2 444 260.21 is the mean epoch of the minimum (Min I) given by Gosset et al. (1984). The orbital phases were calculated with the ephemeris: T_conj = 2 452 051.93 + 31.033E.

⁽¹⁾

T_°: time of periastron passage.

⁽¹⁾

T_conj: time of spectroscopic conjunction.

⁽¹⁾

ΔT = T_conj – T_{phot − min}.

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