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Table 1
General information on metal-poor benchmark candidates.
| Star | RA | Dec | Teff | σ Teff | N | log g | σ log g | N | [Fe/H] | σ[Fe/H] | N |
| (J2000) | (J2000) | (K) | (K) | (dex) | (dex) | (dex) | (dex) | ||||
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| Selected | |||||||||||
|
|
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| BD+264251 | 21:43:57.12 | +27:23:24.00 | 5991 | 97 | 8 | 4.30 | 0.36 | 7 | –1.27 | 0.08 | 7 |
| HD 102200 | 11:45:34.24 | –46:03:46.39 | 6119 | 52 | 10 | 4.22 | 0.16 | 7 | –1.22 | 0.06 | 7 |
| HD 106038 | 12:12:01.37 | +13:15:40.62 | 6012 | 68 | 9 | 4.36 | 0.09 | 4 | –1.31 | 0.04 | 4 |
| HD 126681 | 14:27:24.91 | –18:24:40.44 | 5567 | 84 | 21 | 4.59 | 0.17 | 12 | –1.18 | 0.09 | 12 |
| HD 175305 | 18:47:06.44 | +74:43:31.45 | 5085 | 58 | 15 | 2.49 | 0.25 | 13 | –1.43 | 0.07 | 14 |
| HD 196892 | 20:40:49.38 | –18:47:33.28 | 5954 | 94 | 9 | 4.16 | 0.24 | 8 | –1.03 | 0.08 | 9 |
| HD 201891 | 21:11:59.03 | +17:43:39.89 | 5883 | 68 | 35 | 4.33 | 0.15 | 28 | –1.05 | 0.08 | 28 |
| HD 218857 | 23:11:24.60 | –16:15:04.02 | 5119 | 40 | 7 | 2.50 | 0.34 | 6 | –1.91 | 0.09 | 7 |
| HD 241253 | 05:09:56.96 | +05:33:26.75 | 5879 | 94 | 13 | 4.35 | 0.15 | 9 | –1.06 | 0.06 | 9 |
| HD 298986 | 10:17:14.88 | –52:29:18.71 | 6177 | 82 | 8 | 4.23 | 0.06 | 5 | –1.33 | 0.04 | 5 |
|
|
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| Not selected | |||||||||||
|
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| BD+053640 | 18:12:21.88 | +05:24:04.41 | 5051 | 83 | 9 | 4.59 | 0.15 | 5 | –1.20 | 0.10 | 5 |
| HD 021581 | 03:28:54.48 | –00:25:03.11 | 4889 | 61 | 11 | 2.15 | 0.20 | 6 | –1.67 | 0.08 | 7 |
| HD 023439A | 03:47:02.12 | +41:25:38.12 | 5059 | 73 | 13 | 4.51 | 0.11 | 13 | –1.06 | 0.08 | 13 |
| HD 023439B | 03:47:02.63 | +41:25:42.56 | 4808 | 70 | 6 | 4.55 | 0.09 | 6 | –1.04 | 0.09 | 6 |
| HD 063791 | 07:54:28.72 | +62:08:10.76 | 4715 | 73 | 9 | 1.75 | 0.07 | 9 | –1.68 | 0.08 | 9 |
| HD 083212 | 09:36:19.95 | –20:53:14.75 | 4512 | 55 | 15 | 1.37 | 0.32 | 13 | –1.46 | 0.06 | 13 |
| HD 103095 | 11:52:58.76 | +37:43:07.23 | 5071 | 76 | 44 | 4.65 | 0.17 | 36 | –1.34 | 0.10 | 38 |
| HD 134440 | 15:10:12.96 | –16:27:46.51 | 4817 | 82 | 16 | 4.61 | 0.11 | 11 | –1.44 | 0.08 | 11 |
| HD 199289 | 20:58:08.52 | –48:12:13.45 | 5895 | 60 | 12 | 4.36 | 0.23 | 9 | –1.01 | 0.06 | 10 |
| HD 204543 | 21:29:28.21 | –03:30:55.37 | 4667 | 66 | 15 | 1.30 | 0.22 | 11 | –1.80 | 0.10 | 12 |
| HD 206739 | 21:44:23.94 | –11:46:22.84 | 4662 | 33 | 8 | 1.70 | 0.00 | 5 | –1.58 | 0.02 | 5 |
Notes. The stellar parameters for each star were compiled using the PASTEL database (Soubiran et al. 2010). The Teff, σTeff, log g, σlog g, [Fe/H], and σ[Fe/H] represent the mean and dispersion of the stellar parameters from N references in the PASTEL database.
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