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Table 1
Main characteristics of the atomic lines used in the present analysis.
| Elem | Wavelength | χex | log gf | R | Remark | ||
| (nm) | (eV) | ||||||
|
|
|||||||
| Si I | 594.855 | 8.50 | −1.23 | 20 000 | |||
| Ca I | 610.272 | 1.88 | −0.79 | 20 000 | |||
| Ca I | 612.221 | 1.89 | −0.32 | 20 000 | |||
| Ca I | 649.378 | 2.52 | −0.11 | 20 000 | |||
| Ca I | 671.768 | 2.71 | −0.52 | 20 000 | |||
| Ni I | 676.772 | 1.83 | −2.17 | 20 000 | |||
| Sr II | 407.771 | 0.00 | +0.17 | 6000 | |||
| Ba II | 455.40 | 0.00 | +0.17 | 6000 | hfs(1) | ||
| Ba II | 585.37 | 0.60 | −1.01 | 20 000 | hfs(1) | ||
| Ba II | 649.69 | 0.60 | −0.41 | 20 000 | hfs(2) | ||
Notes. R is the Resolving power of the spectrum used for the measurement. hfs(1): hyperfine structure from McWilliam et al. (1995). hfs(2): hyperfine structure from Mashonkina et al. (1999).
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