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Table 1

Atomic line parameters of the 1.5 μm spectral region.

Element Wavelength (Å) Jl Ju log (gf) log (gf) χe (eV) geff α σ
Fe I 15 645.020 2.0 2.0 − 0.348 ± 0.013 −0.520(a) 6.311 2.333LS 0.290 1883
Fe II 15 645.303 2.5 3.5 2.481 ± 0.144 12.897 0.714LS 0.300* 1071*
Fe I 15 648.514 1.0 1.0 − 0.611 ± 0.008 −0.745(b) 5.426 3.000LS 0.229 975
Fe I 15 652.873 5.0 4.0 0.001 ± 0.010 −0.113(b) 6.246 1.670jK 0.330 1445
Fe I 15 656.635 5.0 4.0 − 1.534 ± 0.044 5.874 1.875LS 0.236 830
Fe II 15 656.639 3.5 2.5 − 0.096 ± 0.326 10.500 1.929LS 0.300* 1071*
Fe I 15 662.017 5.0 4.0 0.200 ± 0.013 0.120(a) 5.828 1.500LS 0.240 1197
Fe I 15 665.245 1.0 1.0 − 0.386 ± 0.009 −0.490(a) 5.979 0.750LS 0.230 1280
O I 15 665.098 1.0 0.0 0.456 ± 0.107 12.087 0.500LS 0.300* 1071*
Fe I 15 670.131 5.0 5.0 − 0.930 ± 0.026 6.206 1.550LS 0.282 1679
Ti I 15 670.157 5.0 5.0 1.045 ± 0.177 5.210 1.214jK 0.326 1564
Fe I 15 670.998 1.0 2.0 − 0.330 ± 0.016 6.329 0.424jK 0.321 1768
Fe I 15 671.870 3.0 3.0 − 1.165 ± 0.030 5.921 1.083LS 0.236 1198
Fe I 15 673.160 5.0 6.0 − 0.488 ± 0.020 6.246 0.564jK 0.330 1424
Fe II 15 673.159 3.5 2.5 2.971 ± 0.144 13.218 1.500LS 0.300* 1071*

Notes. The columns show (from left to right) the element and the ionization state, wavelength, total angular momentum quantum number of the lower and upper levels (Jl and Ju), the oscillator strength log (gf) calculated in this work, log (gf) values from the literature, the excitation potential of the lower level (χe), the Landé g-factor, and the coefficients for collisional broadening (α and σ). Abundances: Asplund et al. (2009) (7.50, 8.69, and 4.95 dex for Fe, O, and Ti, respectively). * indicates assumed coefficients for collisional broadening. LS and jK stand for the Landé g-factors calculated using LS and jK coupling schemes, respectively.

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