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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

Notes.

(†)

CEMP stars with [Ba/Fe] ≤ 1 and [Eu/Fe] ≤ 1, or without detections of barium and europium.

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