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.
References. (a)Beck & Choudhary (2019); (b)Borrero et al. (2003).
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