Notes. Only the 10 first sources of the sample are shown. The whole list of 658 stars hosting 755 exoplanet candidates is available at the CDS. ^(a) The Gaia recorded flux magnitude in the G band. ^(b)The parallax. For the sources from the secondary dataset, the values are given without error bars since they are missing from the DR1. These values are taken from the DR2. For those, we assume 10% error bars in the rest of the study. ^(c) DR1 primary (1) or secondary (2) dataset. ^(d)Duplicate source (true) or not (false), as explained in Lindegren et al. (2016). ^(e) Number of field-of-view transits of the sources (matched_observations in the DR1 database). ^(f) Total number of astrometric AL observations reported (astrometric_n_good_obs_al in the DR1 database). ^(g) Astrometric excess noise in mas. ^(h)Significance of ε_DR1. Any D_ε > 2 leads to a significant astrometric excess noise with p-value = e^−D_ε∕2 as explained in Lindegren et al. (2012). ⁽ⁱ⁾ G_b − G_r color index as presented in Lindegren et al. (2018).