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Table 1
Classification of stars in our observational sample based on the SAGA database.
| Definition of stellar group | Number |
| of stars | |
|
|
|
| [Fe/H] < −1 (MP) | 1944 |
| MP with detected barium and europium (including limits) | 725 |
| − MP with barium and europium abundances | 451 |
| − MP with [Ba/Fe] > 1.0 | 60 |
| − MP-s ([Ba/Fe] > 1.0 and [Ba/Eu] > 0.0) | 50 |
| − MP-r/s ([Ba/Fe] > 1.0, [Ba/Eu] > 0.0, and [Eu/Fe] > 1.0) | 26 |
| − MP-r ([Eu/Fe] > 1.0, [Ba/Eu] ≤ 0.0) | 26 |
|
|
|
| MP with carbon abundances | 947 |
| − MP with [C/Fe] ≤ 1.0 | 763 |
| − MP with [C/Fe] > 1.0 (CEMP) | 184 |
| − CEMP-no† | 75 |
| − CEMP with barium abundances | 152 |
| − CEMP with [Ba/Fe] > 1.0 without europium abundances | 55 |
| − CEMP with barium and europium abundances | 56 |
| − CEMP-r | 5 |
| − CEMP with [Ba/Fe] > 1.0 (with europium abundances) | 51 |
| − CEMP-s | 48 |
| − CEMP-r/s | 26 |
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