Table 1.
Stars with [Fe/H] < −4.5.
| Name | α(2000) | δ(2000) | Teff | log g | [Fe/H] | A(C)(1D) | A(Li) | References |
|---|---|---|---|---|---|---|---|---|
| (HMS) | (DMS) | (K) | (c.g.s.) | (dex) | (dex) | (dex) | ||
| SDSS J0023+0307 | 00:23:14.0 | +03:07:58 | 6140 | 4.8 | <− 5.5 | 6.20 | 2.02 | 1,2 |
| HE 0107−5240 | 01:09:29.1 | −52:24:34 | 5100 | 2.2 | −5.39 | 6.90 | < 1.12 | 3 |
| HE 0233−0343 | 02:36:29.7 | −03:30:06 | 6100 | 3.4 | −4.68 | 7.23 | 1.77 | 4 |
| SMSS 0313−6708 | 03:13:00.4 | −67:08:39 | 5125 | 2.3 | <− 7.10 | 6.12 | 0.7 | 5 |
| HE 0557−4840 | 05:58:39.2 | −48:39:57 | 4900 | 2.2 | −4.75 | 5.45 | 6 | |
| SDSS J0815+4729 | 08:15:54.3 | +47:29:48 | 6215 | 4.7 | <− 5.8 | 7.7 | 7 | |
| SDSS J0929+0238 | 09:29:12.3 | +02:38:17 | 5894 | 4.5 | −4.97 | 7.44 | < 1.24 | 8 |
| SDSS J1029+1729 | 10:29:15.2 | +17:29:28 | 5811 | 4.0 | −4.73 | < 4.30 | < 1.1 | 9 |
| SDSS J1035+0641 | 10:35:56.1 | +06:41:44 | 6262 | 4.0 | <− 5.20 | 7.17 | 1.90 | 10 |
| SDSS J1313−0019 | 13:13:26.9 | −00:19:41 | 5170 | 2.6 | −5.00 | 6.39 | < 0.80 | 11,12 |
| HE 1327−2326 | 13:30:06.0 | −23:41:50 | 6180 | 3.7 | −5.60 | 7.0 | <1.6 | 13 |
| Pristine_221.8781+9.7844 | 14:47:30.7 | +09:47:04 | 5792 | 3.5 | −4.66 | < 5.60 | 1.70 | 14 |
| SMSS 160540.18−144323.1 | 16:05:40.2 | −14:43:23.1 | 4850 | 2.0 | −6.21 | 6.07 | < 0.48 | 15 |
| SDSS J1742+2531 | 17:42:59.7 | +25:31:36 | 6345 | 4.0 | −4.80 | 7.26 | < 1.8 | 16 |
Notes. Column (1) is the main identifier for the star, Col. (2) is the right ascension at epoch 2000, Col. (3) is the declination at epoch 2000, Col. (4) is the effective temperature, Col. (5) is the logarithm of the surface gravity expressed in c.g.s. units, Col. (6) is the iron abundance relative to solar ([Fe/H] = log(Fe/H) – log(Fe/H)⊙), Col. (7) is the carbon abundance (log(C/H) + 12), or upper limit on the carbon abundance derived from 1D model atmospheres, Col. (8) is the lithium abundance (log(Li/H) + 12), and Col. (9) shows the references for the atmospheric parameters and the abundances.
References. (1) Aguado et al. (2018a).
(2) Aguado et al. (2019).
(4) Hansen et al. (2014).
(5) Keller et al. (2014).
(6) Norris et al. (2007).
(8) Caffau et al. (2016).
(9) Caffau et al. (2011).
(10) Bonifacio et al. (2018).
(11) Allende Prieto et al. (2015).
(12) Frebel et al. (2015).
(13) Frebel et al. (2005).
(14) Starkenburg et al. (2018).
(15) Nordlander et al. (2019).
(16) Bonifacio et al. (2015).
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