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Table 5:

The (circular) orbital solutions based on the 1031-d period.

Element
Solution 1: H$\alpha $ emis. Solution 2: He I 6678

P (d)
1031.55  $\pm$  0.71 1031.55 fixed
$T_{\rm RV~max}$ 51759.2  $\pm$ 1.4 51749.5  $\pm$ 4.5
K (km s-1) 21.593  $\pm$  0.071 20.81  $\pm$ 0.60
$\gamma$ (km s-1) *) -12.36  $\pm$ 0.41
f(m) ($M_{\odot}$) 1.076 0.9634
rms (km s-1) 0.944 7.42
No. of RVs 437 430

Notes. For the H$\alpha $ emission line RVs, the data were divided into five segments, covering individual orbital periods, and treated formally as coming from different spectrographs with different systemic RVs. Thus, we were able to remove the slight long-term variations affecting the RVs. No such procedure was applied to the He I 6678 RVs. All epochs are in HJD-2 400 000; rms is the rms of the O-C values.
*) Local $\gamma$'s ranged from -5.8 to -11.6 km s-1, all with rms errors below 1 km s-1.


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