Reconstruction of Cepheid radial velocity curves from the shape of the V-band light curves

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Table 2

Accuracy of the reconstructed RV curves’ shape as a function of the Fourier fit order.

n	∆A/A (%)	σ_RMS (km/s)	RMS ∆ ∫\|V_r\| (%)	Median ∆ ∫\|V_r\| (%)
1	−5.223	4.384	7.088	−6.395
2	0.548	2.090	6.886	−6.305
3	1.343	1.087	4.184	−1.553
4	0.787	0.706	4.181	−1.522
5	0.220	0.611	4.160	−0.742
6	−0.327	0.526	4.164	−0.714
7	−0.524	0.526	4.176	−0.552

Notes. The table presents the median of the relative error of the peak-to-peak amplitude (see Eq. (10)), the median of residuals of the reconstruction (see Eq. (8)), the RMS and the median of relative deviation of the reconstructed RVs. See also Fig. 9d.

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