Table 1.
Statistical properties of our dataset, divided in nights.
| Date | Julian date | Mean [km s−1] | sMAD (α) | sMADcorr (α) | m | r2 | nobs | Mean S/N |
|---|---|---|---|---|---|---|---|---|
| 2003-09-29 | 2452911.54 | −0.13 | 1.22 | 1.38 | 0.02 | 0.020 | 50 | 29.0 |
| 2003-09-30 | 2452912.54 | 0.07 | 0 | 0 | – | – | 1 | 12.2 |
| 2004-09-10 | 2452892.84 | 0.90 | 1.42 | 1.19 | −0.05 | 0.020 | 56 | 51.8 |
| 2005-11-08 | 2453682.71 | −1.60 | 1.94 | 1.60 | −0.09 | 0.110 | 37 | 23.5 |
| 2007-09-16 | 2454359.67 | −6.07 | 2.10 | 0.40 | 0.17 | 0.045 | 5 | 24.1 |
| 2014-07-20 | 2456858.86 | −0.03 | 0.83 | 0.99 | −0.02 | 0.012 | 96 | 53.7 |
| 2014-07-21 | 2456859.84 | 0.41 | 0.80 | 0.92 | −0.01 | 0.001 | 96 | 53.3 |
| 2014-07-30 | 2456868.70 | −0.12 | 0.84 | 0.96 | −0.02 | 0.009 | 96 | 65.4 |
| 2014-08-16 | 2456885.71 | 0 | 0 | 0 | 0 | – | 96 | 63.5 |
| 2014-08-19 | 2456888.71 | −0.21 | 0.71 | 0.81 | −0.01 | 0.003 | 96 | 61.3 |
| 2014-10-24 | 2456954.59 | 0.10 | 0.95 | 1.10 | −0.02 | 0.008 | 96 | 53.6 |
| 2015-07-18 | 2457221.86 | 0.33 | 0.90 | 0.92 | −0.03 | 0.017 | 96 | 64.2 |
| 2015-10-04 | 2457299.67 | 0.23 | 1.13 | 1.23 | −0.01 | 0.001 | 96 | 61.0 |
Notes. Column 1 lists the night of observation. Column 2 the mean of the difference of velocities between that night and the reference night (2014-08-16). Column 3 the standard deviation of the difference between velocities before the offsets’ correction. Column 4 the sMAD for the distribution of the parameter α before the correction of the velocity uncertainties. Column 5 the sMAD for the distribution of α after the offset correction. Column 6 the slope of the best linear fit between the difference between velocity and the velocity in the reference night used to compute it. Column 7 lists the dispersion coefficients of the data in the same velocity space; for the 2014–2015 observations, Col. 8 lists the number of stars in each exposure, while for the 2003–2007 observations, it gives the number of stars overlapping to those observed in the monitoring program and proceeding from a given night. Finally, Col. 9 lists the mean S/N of the spectra at each night.
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