Table 1: Atomic parameters of the observed lines. $\lambda _0$ denotes the laboratory wavelength, $\chi _{\rm l}$ the excitation potential of the lower energy level, and $\log gf$ the logarithm of the oscillator strength times the multiplicity of the level. The parameters $\alpha$ and $\sigma$ (in units of the Bohr radius, a₀) are used to calculate the line broadening by collisions with neutral hydrogen, atoms, while $g_{\rm l}$ , $g_{\rm u}$ , and $\bar g$ are the calculated Landé factors of the lower and upper levels, and the effective value, respectively.
Species $\lambda _0$ Configuration $\chi _{\rm l}$ $\log gf$ $\alpha$ $\sigma$ $g_{\rm l}$ $g_{\rm u}$ $\bar g$

(Å) (eV) (dex) (a₀)

Fe I 15 662.018 $^{5}\rm F_{5}-^{5}F_{4}$ 5.83 0.19 0.24 1200 1.40 1.35 1.50

Fe I 15 665.245 $^{5}\rm F_{1}-^{5}D_{1}$ 5.98 -0.42 0.23 1283 0.00 1.50 0.75

**Table 1:** Atomic parameters of the observed lines. $\lambda _0$ denotes the laboratory wavelength, $\chi _{\rm l}$ the excitation potential of the lower energy level, and $\log gf$ the logarithm of the oscillator strength times the multiplicity of the level. The parameters $\alpha$ and $\sigma$ (in units of the Bohr radius, a₀) are used to calculate the line broadening by collisions with neutral hydrogen, atoms, while $g_{\rm l}$ , $g_{\rm u}$ , and $\bar g$ are the calculated Landé factors of the lower and upper levels, and the effective value, respectively.
Species	$\lambda _0$	Configuration	$\chi _{\rm l}$	$\log gf$	$\alpha$	$\sigma$	$g_{\rm l}$	$g_{\rm u}$	$\bar g$
	(Å)		(eV)	(dex)		(a₀)
Fe I	15 662.018	$^{5}\rm F_{5}-^{5}F_{4}$	5.83	0.19	0.24	1200	1.40	1.35	1.50
Fe I	15 665.245	$^{5}\rm F_{1}-^{5}D_{1}$	5.98	-0.42	0.23	1283	0.00	1.50	0.75

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