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Table A.2.

Age and metallicity estimates of all the west halo clusters available from the literature.

Cluster Age Reference [Fe/H] Reference
[Gyr]
WH clusters already studied in common with our sample

K9, L13 0.40 1 −1.12 ± 0.05 2
0.50 3
NGC152 4 4
−0.72 ± 0.02 5
−0.73 ± 0.11 6
−1.25 ± 0.25 7
1.40 ± 0.20 8 −0.94 ± 0.15 8
1.23 ± 0.07 9 −0.87 ± 0.07 9
B2 1.80 ± 0.70 9 −1.00± 9
K6, L9 1.60 ± 0.20 10 −0.63 ± 0.03 2
K8, L12 4 4
1.30 11 −0.70 ± 0.03 2
2.94 ± 0.31 9 −1.12 ± 0.15 9
B4 3.80 ± 0.60 9 −1.19 ± 0.24 9
K7 4 4
3.50 ± 1.00 12,10 −0.81 ± 0.04 12
3 13 −0.80 ± 0.04 13
L14 2.80 ± 0.40 9 −1.14 ± 0.11 9
K11 1.47 ± 0.11 9 −0.78 ± 0.19 9
L2 4 4
14 14
HW1 14 14
HW5 4.30 ± 0.90 9 −1.28 ± 0.32 9
AM3 5 − 6 15 ∼−1.30 15
6.00 ± 0.15 16 −1.25 ± 0.25 16
17 17
14 14
4 4
NGC121 10.5 ± 0.50 18 −1.19 ± 0.12 12
−1.28 ± 0.06 19
−1.41 ± 0.42 20
−1.51 ± 0.42 21
WH clusters already studied, but not in our sample
B6 0.13 ± 0.04 9 −0.04 ± 0.06 9
L3 14 14
−0.90 ± 0.05 22
K5, L7 1.60 ± 0.20 23 −0.76 ± 0.06 24
HW6 3.20 ± 0.90 9 −1.32 ± 0.28 9
L5 3.70 ± 0.50 23 −1.25 ± 0.05 24
K3, L8 6.50 ± 0.50 25 −0.85 ± 0.03 2
3.5 ± 1 22 −0.93 22
4.70 ± 0.60 27 −1.16 ± 0.09 27
L1 7.50 ± 0.50 25 −1.04 ± 0.03 2
K1, L4 7.90 ± 1.10 23 −1.08 ± 0.04 24
K4, L6 8.70 ± 1.20 23 −1.24 ± 0.03 24
L11 3.00 ± 0.40 13 −0.83 ± 0.06 5

Nearly all clusters from our sample, except B1, were studied before with different techniques. The total 24 clusters plus B1 account for ∼60% of the total number of WH clusters listed in the Bica et al. (2020) catalogue. The other 16 clusters are: OGLS 263 − 273, 316, 321, 330, BS4, BS5, H8612, H8615.

References : (1) Nayak et al. (2018); (2) Parisi et al. (2015); (3) Glatt et al. (2010); (4) Dias et al. (2022); (5) Parisi et al. (2022); (6) Song et al. (2021); (7) Bica et al. (1986); (8) Crowl et al. (2001); (9) Dias et al. (2016a); (10) Piatti et al. (2005); (11) Rafelski & Zaritsky (2005); (12) Da Costa & Hatzidimitriou (1998); (13) Livanou et al. (2013); (14) Dias et al. (2014); (15) Da Costa (1999); (16) Piatti (2011); (17) Maia et al. (2019); (18) Glatt et al. (2008a); (19) Dalessandro et al. (2016); (20) Johnson et al. (2004); (21) Zinn & West (1984); (22) De Bortoli et al. (2022); (23) Parisi et al. (2014); (24) Parisi et al. (2009); (25) Glatt et al. (2008b); (26) Mould et al. (1992); (27) Mighell et al. (1998).

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