Table 1.
Element, wavelength, log g f, hyperfine structure, and reference for the 15 spectral lines used in this study.
| El. | line (Å) | log g f | χe | HFS | Ref. | Spec. |
|---|---|---|---|---|---|---|
| Ba II | 5853.69 | −1.01 | 0.60 | Yes | ru | H/F/U564 |
| Ba II | 6141.73 | −0.07 | 0.70 | Yes | ru | H/F/U564 |
| Ba II | 6496.90 | −0.38 | 0.60 | Yes | ru | H/F/U564 |
| Eu II | 4129.72 | +0.22 | 0.00 | Yes | la | H/F/U437 |
| Eu II | 4205.04 | +0.21 | 0.00 | Yes | la | H/F/U437 |
| Eu II | 6437.64 | −0.32 | 1.31 | Yes | la | H/F/U580 |
| Eu II | 6645.13 | +0.12 | 1.38 | Yes | la | H/F/U580 |
| Gd II | 4085.56 | −0.01 | 0.73 | No | dh | H/F/U437 |
| Gd II | 4191.05 | −0.48 | 0.43 | No | dh | H/F/U437 |
| Gd II | 4316.05 | −0.45 | 0.66 | No | dh | H/F/U437 |
| Gd II | 4483.32 | −0.42 | 1.06 | No | dh | H/F/U437 |
| Gd II | 4498.28 | −1.08 | 0.43 | No | dh | H/F/U437 |
| Dy II | 4073.12 | −0.32 | 0.54 | No | wl | H/F/U437 |
| Dy II | 4449.70 | −1.03 | 0.00 | No | wl | H/F/U437 |
Notes. ru == Rutten (1978). la == Lawler et al. (2001). dh == Den Hartog et al. (2006). wl == Wickliffe et al. (2000). For a given line the available spectrograph is indicated (Spec.): H, F, and U stand for HARPS, FEROS, and UVES(+set-up), respectively.
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