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Table 3

Adopted atmospheric parameters and NLTE S abundances for our sample of EMP stars.

      3D+ 3D+ 3D+
    NLTE LTE err. NLTE 3D NLTE NLTE NLTE
Star name Teff log g vt [Fe/H] [Mg/H] log ϵ(S)  ±  log ϵ(S) corr. [S/H] [S/Fe] [S/Mg] N
Turnoff stars
BS 16968–061 6040 3.8 1.5 −3.05 −2.46 4.90 0.20 4.33 0.14 −2.69 0.36 −0.23 1
BS 17570–063 6240 4.8 0.5 −2.92 −2.52 5.05 0.20 4.61 0.12 −2.43 0.49 0.09 1
CS 22965–054 6090 3.8 1.4 −3.04 −2.42 4.74 0.20 4.21 0.13 −2.82 0.22 −0.40 1
CS 29499–060 6320 4.0 1.5 −2.70 −2.14 4.90 0.20 4.50 0.12 −2.54 0.16 −0.40 1
CS 29506–007 6270 4.0 1.7 −2.91 −2.25 5.03 0.20 4.62 0.12 −2.44 0.47 −0.19 1
CS 29506–090 6300 4.3 1.4 −2.83 −2.22 4.98 0.20 4.56 0.12 −2.48 0.35 −0.26 1
CS 30301–024 6330 4.0 1.6 −2.75 −2.25 4.98 0.20 4.60 0.12 −2.44 0.31 −0.19 1
Giants
HD 2796 4950 1.5 2.1 −2.47 −1.84 5.25 0.10 4.97 0.07 −2.12 0.35 −0.28 3
HD 122563 4600 1.1 2.0 −2.82 −2.19 4.87 0.10 4.70 0.06 −2.40 0.42 −0.21 2
HD 186478 4700 1.3 2.0 −2.59 −1.86 5.07 0.08 4.84 0.06 −2.26 0.33 −0.40 2
BD+17 3248 5250 1.4 1.5 −2.07 −1.39 5.57 0.10 5.11 0.10 −1.95 0.12 −0.56 2
BD-18 5550 4750 1.4 1.8 −3.06 −2.44 4.65 0.12 4.41 0.07 −2.68 0.38 −0.24 1
BS 17569–049 4700 1.2 1.9 −2.88 −2.11 4.70 0.20 4.40 0.06 −2.70 0.18 −0.59 2
CS 22169–035 4700 1.2 2.2 −3.04 −2.66 4.50 0.11 4.20 0.05 −2.91 0.13 −0.25 1
CS 22186–025 4900 1.5 2.0 −3.00 −2.39 4.70 0.10 4.43 0.06 −2.67 0.33 −0.28 2
CS 22189–009 4900 1.7 1.9 −3.49 −3.11 4.25 0.20 3.97 0.07 −3.12 0.37 −0.01 2
CS 22873–055 4550 0.7 2.2 −2.99 −2.34 4.72 0.10 4.52 0.10 −2.54 0.45 −0.20 1
CS 22873–166 4550 0.9 2.1 −2.97 −2.14 4.70 0.10 4.55 0.07 −2.54 0.43 −0.40 3
CS 22878–101 4800 1.3 2.0 −3.25 −2.56 4.55 0.16 4.36 0.05 −2.75 0.50 −0.19 1
CS 22891–209 4700 1.0 2.1 −3.29 −2.69 4.40 0.15 4.21 0.06 −2.89 0.40 −0.20 1
CS 22892–052* 4850 1.6 1.9 −3.03 −2.52 4.48 0.10 4.29 0.05 −2.82 0.21 −0.30 1
CS 22896–154 5250 2.7 1.2 −2.69 −2.06 5.00 0.08 4.56 0.07 −2.53 0.16 −0.47 2
CS 22897–008 4900 1.7 2.0 −3.41 −2.83 4.35 0.18 4.10 0.06 −3.00 0.41 −0.17 1
CS 22948–066 5100 1.8 2.0 −3.14 −2.59 4.65 0.14 4.26 0.06 −2.84 0.30 −0.25 1
CS 22949–037* 4900 1.5 1.8 −3.97 −2.42  < 3.9 −  < 3.6 0.07  < 3.7  < 0.5  < −1.1 2
CS 22953–003 5100 2.3 1.7 −2.84 −2.34 4.72 0.10 4.41 0.06 −2.69 0.15 −0.35 2
CS 22956–050 4900 1.7 1.8 −3.33 −2.59 4.45 0.20 4.18 0.06 −2.92 0.41 −0.33 1
CS 22966–057 5300 2.2 1.4 −2.62 −1.89 5.12 0.10 4.62 0.08 −2.46 0.16 −0.57 3
CS 29491–053 4700 1.3 2.0 −3.04 −2.34 4.60 0.10 4.45 0.05 −2.66 0.38 −0.32 3
CS 29502–042 5100 2.5 1.5 −3.19 −2.52 4.50 0.14 4.13 0.06 −2.97 0.22 −0.45 1
CS 29518–051 5200 2.6 1.4 −2.69 −2.02 4.95 0.10 4.50 0.07 −2.59 0.10 −0.57 2
CS 30325–094 4950 2.0 1.5 −3.30 −2.54 4.64 0.18 4.19 0.06 −2.91 0.39 −0.37 2
CS 31082–001 4825 1.5 1.8 −2.91 −2.09 4.84 0.10 4.54 0.07 −2.55 0.36 −0.46 3
CS 22949–048 4800 1.5 2.0 −3.25 −2.68 4.42 0.15 4.07 0.05 −3.04 0.21 −0.39 2

Notes. The solar abundance of sulfur has been taken from Caffau et al.: log ϵ(S)⊙ = 7.16, the NLTE Mg abundance (Col. 6) is from Andrievsky et al. (2010). The error (Col. 8) represents the uncertainty in the spectral fitting. The last column gives the number of sulfur lines used in the determination.

(*)

An asterisk after the name of the star means that the star is carbon-rich.

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