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Table 7.

New orbital solutions for RVs of component Aa1 with locally derived systemic (γ) velocities.

Element Solution A Solution B Solution C
P (d) 20.73419(18) Fixed Fixed
Tperiastr. 42530.32(20) 42529.88(40) 53830.59(19)
Tinf.conj. 42529.23 42528.97 53829.40
Tmax.RV 42524.85 42524.95 53824.83
e 0.390(21) 0.371(42) 0.387(23)
ω (°) 134.5(3.9) 125.9(8.4) 137.5(4.5)
K1 50.6(1.6) 43.4(3.0) 53.4(1.6)
No. of RVs 301 134 167
rms 12.48 12.96 11.75

Notes. All epochs are in RJDs. In row ‘rms’ we provide the rms of 1 observation. This, as well as the semi-amplitude K1, are in km s−1. Solution A is for all available RVs listed in Table 4. Solutions B and C are for data subsets, with the period fixed from solution A. Solution B is for older RVs before RJD 44000, while solution C is for more recent electronic spectra. For our new RVs measured with SPEFO RVs, we used mean values of the He I 4922 Å, and He I 5016 Å lines. This subset also includes RVs obtained by Walker et al. (2017) from high-resolution spectra.

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