STEPARSYN: A Bayesian code to infer stellar atmospheric parameters using spectral synthesis

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Table 2.

Summary of the MC simulations on T_eff, log g, and [Fe/H] calculated with STEPARSYN against three samples of stellar parameters: literature values, STEPAR, and the trigonometric surface gravities derived using PARAM.

Sample	Parameter	Difference	r_p	r_s
	T_eff	−12 ± 117 K	0.19 ± 0.10	0.21 ± 0.10
Literature	log g	0.04 ± 0.14 dex	−0.34 ± 0.11	0.04 ± 0.14
	[Fe/H]	0.05 ± 0.09 dex	−0.04 ± 0.16	−0.05 ± 0.16

	T_eff	40 ± 87 K	0.07 ± 0.12	0.06 ± 0.13
STEPAR	log g	−0.04 ± 0.21 dex	−0.51 ± 0.13	−0.41 ± 0.12
	[Fe/H]	0.04 ± 0.08 dex	0.28 ± 0.12	0.21 ± 0.11

	T_eff	—	—	—
PARAM ^(a)	log g	−0.03 ± 0.11 dex	−0.12 ± 0.12	0.24 ± 0.12
	[Fe/H]	—	—	—

Notes. We provide differences on each parameter alongside the Pearson (r_p) and the Spearman (r_s) correlation coefficients (see text for details).

^(a)

PARAM only provides log g values.

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