3D NLTE analysis of the most iron-deficient star, SMSS0313-6708

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Table 1

Abundance sensitivity to changes in stellar parameters.

Element	T_eff + 100 K		log g + 0.2 dex		v_mic + 0.5 km s^-1		Standard CNO^a
	NLTE	LTE	NLTE	LTE	NLTE	LTE	NLTE	LTE

Li	+0.10	+0.10	−0.01	0.00	0.00	0.00	−0.01	−0.04
Na	+0.08	+0.09	0.00	0.00	0.00	0.00	−0.01	−0.03
Mg	+0.10	+0.08	−0.03	−0.01	−0.04	−0.06	−0.01	−0.03
Al	+0.11	+0.10	−0.02	−0.01	−0.02	−0.02	0.00	−0.03
Ca	+0.09	+0.06	+0.05	+0.08	−0.18	−0.20	−0.03	−0.05
Fe	+0.15	+0.14	−0.05	−0.01	0.00	0.00	+0.07	−0.05

Notes. The sensitivities have been computed using interpolated standard-composition MARCS models, assuming v_mic = 2 km s^-1.

^(a)

Abundances inferred from an atmospheric model computed with standard abundances, compared to our tailored model which uses [C/H] = [N/H] = −3.0 and [O/H] = −3.6. The difference is given as standard−tailored.

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