7.5.2 Properties of the input data

The input sources processed by the SVD-Solar-Like-SOS-Rotational-Modulation pipeline were selected from the catalogue of sources having at least 20 observations in the $G$ band. From this catalogue, we selected the main sequence stars with a spectral type later then F5. This selection has been done by looking at the position of the stars in the $M_{\mathrm{G}}$ vs. $G_{\mathrm{BP}}-G_{\mathrm{RP}}$ diagram, and therfore the parallax of the star is needed. In order to limit the errors on the $M_{\mathrm{G}}$ computation, we selected only stars with a relative error in parallax less than $20\%$. A second criterion used to select the input stars is based on the time sampling of $G$ observations. As described in Distefano et al. (2012), the analysis of solar-like variables requires that the $G$ and the $G_{\mathrm{BP}}-G_{\mathrm{RP}}$ time-series can be segmented in small sub-series. The SVD-Solar-Like-SOS-Rotational-Modulation pipeline was employed to process only sources whose time-series can be split in at least two segments with a number of observations $N_{\mathrm{G}}\ge 12$. See Lanzafame et al. (2018) for more details on the selection procedure.