Table 1.
Fit coefficients determined for the reference epoch per data set.
| Source | a | b |
|---|---|---|
| (km s−1) | (km s−1) | |
| Hermes h1 | −1.763 ± 0.005 | −0.005 ± 0.005 |
| Hermes h2 | 0.026 ± 0.005 | 0.044 ± 0.006 |
| K96 “08” | −0.759 ± 0.109 | −0.002 ± 0.106 |
| K96 “CE” | −0.813 ± 0.012 | −0.001 ± 0.012 |
| Gorynya | −0.61 ± 0.24 | 0.001 ± 0.24 |
Notes. The reference RV model is obtained as vr = vγ + ∑jaj ⋅ sin2πjϕpuls + bj ⋅ cos2πjϕpuls. In the case of Hermes, we use two harmonics j (h1,h2) and allow for an additional linear trend, 
, per epoch to account for orbital motion and additional periodicities on timescales longer than 10 d. Phase ϕ is computed using Ppuls = 3.97198 ± 0.00004 d and t0 = 56553.62553. For literature data, we use a single harmonic (sinusoidal) RV curve shape. Phase ϕ ≡ 0 is set to the minimum RV, so that a1 < 0 and b1 = 0 for sinusoidal RV curves. We adopt Ppuls = 3.9721 d from K96 to fit the “08”, “CE”, and Gorynya data sets.
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