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Table 9
Abundance comparison of individual Hyades stars (see text).
| Parameter | Here | S09/S06 | M07/M06 | F07 | Bo00 | LC95 |
| Resolution | 30 000 | 60 000 | 42 000 | 30 000 | 45 000 | 30 000 |
| S/N | 300–600 | ~500 | 100–350 | 175 | 100–300 | >100 |
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| Star | 028 (γ tau) | |||||
| Teff (K) | 4750 | 4965 | 4955 | 4823 | 4956 | 4900 |
| logg (dex) | 2.7 | 2.63 | 2.7 | 2.43 | 2.83 | 2.6 |
| vt (km s-1) | 1.4 | 1.32 | 1.4 | 1.57 | 1.35 | 2.0 |
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| [FeI/H] | +0.12 ± 0.01 | +0.14 ± 0.08 | +0.11 | +0.16 ± 0.05 | +0.11 ± 0.01 | +0.13 ± 0.02 |
| [FeII/H] | +0.13 ± 0.03 | +0.22 ± 0.16 | +0.10 | +0.09 ± 0.08 | +0.11 ± 0.02 | +0.12 ± 0.02 |
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| [Al/Fe] | –0.01 ± 0.05 | +0.20 ± 0.01 | – | +0.19 ± 0.07 | +0.12 ± 0.00 | –0.17 ± 0.03 |
| [Ba/Fe] | +0.37 ± 0.05 | – | –0.07 | – | +0.09 ± 0.05 | –0.04 ± 0.00 |
| [Ca/Fe] | –0.07 ± 0.03 | – | +0.10 ± 0.12 | –0.01 ± 0.11 | +0.01 ± 0.04 | –0.28 ± 0.04 |
| [Co/Fe] | +0.00 ± 0.04 | – | – | – | +0.02 ± 0.02 | +0.04 ± 0.04 |
| [Cr/Fe] | +0.02 ± 0.03 | – | – | – | –0.01 ± 0.02 | –0.03 ± 0.11 |
| [La/Fe] | –0.12 ± 0.06 | – | –0.23 | – | –0.03 ± 0.02 | – |
| [Mg/Fe] | +0.13 ± 0.05 | +0.43 ± 0.01 | –0.08 | +0.03 ± 0.07 | +0.16 ± 0.02 | +0.18 ± 0.05 |
| [Na/Fe] | +0.19 ± 0.02 | +0.49 ± 0.05 | +0.22 | +0.05 ± 0.11 | +0.32 ± 0.01 | +0.22 ± 0.05 |
| [Nd/Fe] | +0.04 ± 0.29 | – | –0.15 | – | –0.02 ± 0.03 | +0.07 ± 0.00 |
| [Ni/Fe] | +0.02 ± 0.02 | +0.12 ± 0.07 | –0.04 ± 0.12 | – | +0.00 ± 0.03 | +0.06 ± 0.03 |
| [O/Fe] | –0.35 ± 0.07 | –0.09 ± 0.06 | –0.09 | –0.04 ± 0.11 | – | – |
| [Sc/Fe] | –0.04 ± 0.05 | – | – | – | +0.00 ± 0.02 | +0.01 ± 0.08 |
| [Si/Fe] | +0.09 ± 0.03 | – | +0.07 ± 0.12 | +0.09 ± 0.09 | +0.09 ± 0.03 | +0.21 ± 0.03 |
| [TiI/Fe] | –0.12 ± 0.02 | – | – | –0.05 ± 0.10 | –0.01 ± 0.01 | –0.14 ± 0.03 |
| [TiII/Fe] | –0.03 ± 0.06 | – | – | –0.04 ± 0.15 | – | – |
| [V/Fe] | +0.02 ± 0.04 | – | – | – | +0.01 ± 0.02 | – |
| [Y/Fe] | –0.12 ± 0.05 | – | –0.11 | – | +0.01 ± 0.01 | +0.10 ± 0.00 |
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| Star | 041 (δ tau) | |||||
| Teff (K) | 4800 | 4938 | 4975 | – | 4980 | 4875 |
| logg (dex) | 2.8 | 2.69 | 2.65 | – | 2.83 | 2.4 |
| vt (km s-1) | 1.4 | 1.40 | 1.4 | – | 1.25 | 2.0 |
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| [FeI/H] | +0.10 ± 0.01 | +0.14 ± 0.07 | +0.11 | – | +0.19 ± 0.01 | +0.07 ± 0.01 |
| [FeII/H] | +0.13 ± 0.03 | +0.26 ± 0.16 | +0.07 | — | +0.18 ± 0.03 | +0.04 ± 0.02 |
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| [Al/Fe] | +0.00 ± 0.05 | +0.16 ± 0.01 | – | – | +0.08 ± 0.01 | –0.14 ± 0.01 |
| [Ba/Fe] | +0.39 ± 0.05 | – | –0.02 | — | +0.15 ± 0.01 | –0.13 ± 0.00 |
| [Ca/Fe] | –0.06 ± 0.03 | – | +0.08 ± 0.12 | – | +0.00 ± 0.05 | –0.17 ± 0.06 |
| [Co/Fe] | +0.01 ± 0.03 | – | – | – | +0.01 ± 0.03 | +0.10 ± 0.05 |
| [Cr/Fe] | +0.03 ± 0.03 | – | – | – | –0.04 ± 0.02 | –0.06 ± 0.09 |
| [La/Fe] | –0.08 ± 0.05 | – | –0.33 | – | –0.05 ± 0.09 | – |
| [Mg/Fe] | +0.06 ± 0.04 | +0.36 ± 0.02 | –0.10 | – | +0.15 ± 0.01 | +0.33 ± 0.07 |
| [Na/Fe] | +0.18 ± 0.02 | +0.44 ± 0.05 | +0.16 | – | +0.32 ± 0.01 | +0.28 ± 0.05 |
| [Nd/Fe] | +0.08 ± 0.30 | – | –0.17 | – | +0.02 ± 0.02 | –0.17 ± 0.00 |
| [Ni/Fe] | +0.04 ± 0.02 | –0.03 ± 0.06 | +0.06 ± 0.09 | – | +0.09 ± 0.06 | +0.11 ± 0.03 |
| [O/Fe] | –0.25 ± 0.05 | –0.03 ± 0.06 | –0.21 | – | – | – |
| [Sc/Fe] | +0.00 ± 0.05 | – | – | – | +0.01 ± 0.02 | –0.02 ± 0.07 |
| [Si/Fe] | +0.09 ± 0.02 | – | +0.07 ± 0.11 | – | +0.06 ± 0.02 | +0.23 ± 0.03 |
| [TiI/Fe] | –0.11 ± 0.02 | – | – | – | –0.04 ± 0.02 | –0.07 ± 0.03 |
| [TiII/Fe] | –0.00 ± 0.07 | – | – | – | – | – |
| [V/Fe] | +0.00 ± 0.03 | – | – | – | +0.02 ± 0.02 | – |
| [Y/Fe] | –0.06 ± 0.06 | – | –0.10 | – | –0.04 ± 0.03 | +0.19 ± 0.00 |
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| Star | 070 (ϵ tau) | |||||
| Teff (K) | 4800 | 4911 | 4925 | 4838 | 4880 | – |
| logg (dex) | 2.8 | 2.57 | 2.55 | 2.52 | 2.50 | – |
| vt (km s-1) | 1.6 | 1.47 | 1.4 | 1.63 | 1.46 | – |
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| [FeI/H] | +0.11 ± 0.01 | +0.20 ± 0.08 | +0.11 | +0.21 ± 0.07 | +0.11 ± 0.01 | – |
| [FeII/H] | +0.09 ± 0.03 | +0.22 ± 0.16 | +0.11 | +0.18 ± 0.10 | +0.05 ± 0.03 | – |
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| [Al/Fe] | +0.02 ± 0.05 | +0.15 ± 0.01 | – | +0.17 ± 0.08 | +0.20 ± 0.01 | – |
| [Ba/Fe] | +0.31 ± 0.05 | – | –0.02 | – | +0.09 ± 0.01 | – |
| [Ca/Fe] | –0.07 ± 0.02 | – | +0.11 ± 0.12 | +0.01 ± 0.10 | +0.09 ± 0.03 | – |
| [Co/Fe] | +0.06 ± 0.03 | – | – | – | –0.01 ± 0.04 | – |
| [Cr/Fe] | +0.08 ± 0.04 | – | – | – | +0.00 ± 0.01 | – |
| [La/Fe] | –0.05 ± 0.05 | – | –0.20 | – | –0.17 ± 0.00 | – |
| [Mg/Fe] | +0.21 ± 0.07 | +0.37 ± 0.02 | –0.08 | –0.03 ± 0.08 | – | – |
| [Na/Fe] | +0.18 ± 0.02 | +0.41 ± 0.04 | +0.23 | +0.04 ± 0.11 | +0.40 ± 0.04 | – |
| [Nd/Fe] | +0.08 ± 0.28 | – | –0.21 | – | –0.10 ± 0.05 | – |
| [Ni/Fe] | +0.03 ± 0.02 | +0.06 ± 0.08 | +0.09 ± 0.11 | – | +0.00 ± 0.02 | – |
| [O/Fe] | –0.22 ± 0.07 | –0.13 ± 0.06 | –0.01 | –0.04 ± 0.13 | – | – |
| [Sc/Fe] | –0.04 ± 0.05 | – | – | – | – | – |
| [Si/Fe] | +0.10 ± 0.03 | – | +0.09 ± 0.11 | +0.05 ± 0.11 | +0.09 ± 0.03 | – |
| [TiI/Fe] | –0.06 ± 0.01 | – | – | –0.01 ± 0.08 | –0.05 ± 0.03 | – |
| [TiII/Fe] | –0.02 ± 0.11 | – | – | –0.14 ± 0.11 | – | – |
| [V/Fe] | +0.09 ± 0.03 | – | – | – | –0.04 ± 0.03 | – |
| [Y/Fe] | –0.07 ± 0.05 | – | –0.11 | – | –0.05 ± 0.03 | – |
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