Barium lines in high-quality spectra of two metal-poor giants in the Galactic halo

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Table 4

Variations of barium abundances obtained from the lines at 5853.668 Å and 6141.730 Å as a function of the atmospheric parameters.

	Best model	_eff = 50 K	ΔT_eff = −50 K	Δlog(g) = + 0.1	Δlog(g) = −0.1
[Ba/H] from 5853.668 Å	–2.611	–2.581	–2.639	–2.585	–2.637
[Ba/H] from 6141.730 Å	–2.635	–2.599	–2.669	–2.608	–2.662
mean [Ba/H]	–2.62	–2.59	–2.65	–2.60	–2.65

Δ [Ba/H]		0.03	–0.03	0.02	0.03

Notes. We present the abundance derived from the single barium lines with three digits; in fact, they are considered to compute the mean and Δ [Ba/H] (the following as usual with two digits).

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