Table 1
Classification of stars into single- and non-single-star candidates.
| Gaia EDR3 parameter 1 | Correlation S1 95% quantile 2 | Correl. S3 (%) 3 | Correl. S4 (%) 4 |
|---|---|---|---|
| ruwe | 2.9 | 32 | 61 |
| parallax_error (mas) | 0.04 | 37 | 65 |
| Proper motion RA/Dec error (mas yr−1) | 0.04 | 33 | 62 |
| astrometric_excess_noise | 0.4 | 31 | 60 |
| astrometric_excess_noise_sig | 263 | 30 | 58 |
| RA/Dec J2016.0 error (mas) | 0.03 | 33 | 63 |
| astrometric_n_bad_obs_al/ | 0.02 | 23 | 37 |
| astrometric_n_good_obs_al | |||
| astrometric_sigma5d_max | 0.06 | 34 | 63 |
| ipd_gof_harmonic_amplitude | 0.03 | 27 | 45 |
| ipd_frac_multi_peak | 2.0 | 26 | 51 |
Notes. Classification is based on Gaia EDR3 quality indicators for the goodness of a single-star astrometric fit. Column 1 gives the indicators. Column 2 gives the 95% quantiles for the indicators, derived by using sample S1 of the ‘correlation’ method (i.e. samples of single-star candidates). Columns 3 and 4 (i.e. samples of non-single-star candidates) give the percentage of the sources in the samples that have a value greater than the corresponding 95% quantile.
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