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Table 2.

Abundance-ratio uncertainties for the model parameters with ΔTeff = 100 K, Δlog g = 0.3 dex, Δξt = 0.05 km s−1, the uncertainties on the mean due to line-to-line scatter (σ[X/H],mean), and corresponding total error.

2M18594405 σ[X/H], log g σ[X/H], Teff σ[X/H], ξt σ[X/H],mean σ[X/H],total
–3651518
[dex] [dex] [dex] [dex] [dex]
12C16O → 12C 0.065 0.018 0.004 0.110 0.129
12C14N → 14N 0.075 0.094 0.023 0.071 0.142
16OH → 16O 0.018 0.097 0.014 0.068 0.121
Mg I 0.005 0.089 0.022 0.052 0.106
Al I 0.011 0.080 0.006 0.117 0.142
Si I 0.045 0.023 0.006 0.094 0.107
K I 0.025 0.044 0.009 0.137 0.146
Ca I 0.023 0.023 0.007 0.085 0.091
Ti I 0.007 0.070 0.033 0.246 0.258
Fe I 0.016 0.042 0.005 0.154 0.161
Ni I 0.027 0.047 0.010 0.155 0.165
Ce II 0.123 0.067 0.025 0.125 0.189
Nd II 0.075 0.071 0.023 0.130 0.168
Yb II 0.092 0.024 0.004 0.020 0.097

2M18594898 σ[X/H], log g σ[X/H], Teff σ[X/H], ξt σ[X/H, mean σ[X/H],total
–3635401
[dex] [dex] [dex] [dex] [dex]

12C16O → 12C 0.035 0.064 0.009 0.052 0.090
12C14N → 14N 0.042 0.108 0.004 0.069 0.135
16OH → 16O 0.049 0.139 0.003 0.035 0.152
Mg I 0.025 0.073 0.016 0.017 0.081
Al I 0.014 0.111 0.009 0.116 0.161
Si I 0.033 0.007 0.003 0.079 0.086
K I 0.038 0.009 0.004 0.014 0.042
Ca I 0.037 0.033 0.003 0.026 0.056
Ti I 0.067 0.070 0.043 0.199 0.225
Fe I 0.036 0.072 0.008 0.116 0.141
Ni I 0.011 0.021 0.003 0.070 0.074
Ce II 0.059 0.013 0.004 0.069 0.092
Nd II 0.049 0.043 0.005 0.043 0.078
Yb II 0.150 0.027 0.002 0.047 0.159

Notes. The total error is defined as: .

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