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Table 2
Principal recommendations for using Gaia EDR3.
| Item | Recommendation | Reference |
|---|---|---|
| Find a DR2 source | Use dedicated neighbourhood table | Sect. 2.1 |
| Isolated source? | For astrometry: check ruwe and image parameter statistics. For GBP and GRP: check statistics on blended and contaminated transits | Fig. 14, Table B.1 |
| Parallax zero point | Consider applying the correction by Lindegren et al. (2021a) | Sect. 3 |
| Spurious astrometry | Check – statistically – for the presence of spurious parallaxes and proper motions | Sect. 3.2 |
| Missing G | Alternative G photometry is available | Sect. 4.1 |
| G magnitude | A small correction should be added for 6p solutions | Sect. 4.3 |
| GBP magnitude | Be aware of a strong bias for GBP > 20.5 mag | Sect. 4.2 |
| GRP magnitude | Be aware of a strong bias for GRP > 20 mag | Sect. 4.2 |
| Colour | Use G − GRP instead of GBP − GRP when faint red sources are included | Sect. 4.2 |
| G, GBP, GRP coherence | Check the C* value defined by Riello et al. (2021) | Sect. 4.6 |
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