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Table 1.
Constraints of the Gaia astrometric solution and color for the final RSG sample.
| Parameters | Constraints |
|---|---|
| PMRA | −1.2 ≤ and ≤ 1.2 mas yr−1 |
| PMDec | −1.2 ≤ and ≤ 1.2 mas yr−1 |
| Parallax | −0.7 ≤ and ≤ 0.7 mas |
| e_PMRA or Dec | ≤1.2 mas yr−1 |
| e_parallax | ≤0.7 mas |
| BP − RP | ≥1.0 mag |
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