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Table 4
Distribution of astrometric excess noise with respect to primary, secondary, and HIPPARCOS datasets in the Gaia DR1 database, and varying selection criteria as explained in the text.
| Reference of data | DR1 dataset | Subset | Nstar | Astrometric excess noise | ||
|---|---|---|---|---|---|---|
| 10th-percentile | Median | 90th-percentile | ||||
| (mas) | (mas) | (mas) | ||||
| Lindegren et al. (2016) | Primary | 2 057 050 | 0.299 | 0.478 | 0.855 | |
| (1 142 719 769 stars) | Secondary | 1 140 662 719 | 0.000 | 0.594 | 2.375 | |
| HIPPARCOS | 93 635 | 0.347 | 0.572 | 1.185 | ||
| This paper sample (Table 3) | Primary | 385 | 0.291 | 0.451 | 0.751 | |
| (524 stars) | All transiting planets | 133 | 0.271 | 0.399 | 0.704 | |
| >1 non-transiting planet | 252 | 0.304 | 0.466 | 0.786 | ||
| With RV drift | 46 | 0.296 | 0.431 | 0.633 | ||
| No RV drift | 339 | 0.291 | 0.453 | 0.761 | ||
| Secondary | 139 | 0.316 | 0.423 | 0.776 | ||
| All transiting planets | 113 | 0.336 | 0.438 | 0.791 | ||
| >1 non-transiting planet | 26 | 0.283 | 0.360 | 0.701 | ||
| With RV drift | 7 | 0.297 | 0.334 | 0.511 | ||
| No RV drift | 132 | 0.318 | 0.425 | 0.794 | ||
| HIPPARCOS | 246 | 0.307 | 0.466 | 0.784 | ||
| Including G < 6.4 & b − r > 1.8 | 297 | 0.324 | 0.513 | 1.048 | ||
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