Oxygen, sulfur, and iron radial abundance gradients of classical Cepheids across the Galactic thin disk

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Volume 678 (October 2023)

A&A, 678 (2023) A195

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Table 4

Slopes and zeropoints of the abundance gradients as a function of the galactocentric distance.

Abundance ratio	Slope [dex kpc⁻¹]	Zero-point [dex]	Fit	Sample
[Fe/H]	−0.041 ± 0.003	0.32 ± 0.02	linear	CCs
[Fe/H]	−0.907 ± 0.046	0.81 ± 0.04	log	CCs
[Fe/H]	−0.055 ± 0.004	0.48 ± 0.04	linear	OCs
[O/H]	−0.029 ± 0.006	0.21 ± 0.05	linear	CCs
[O/H]	−0.564 ± 0.104	0.48 ± 0.09	log	CCs
[O/H]	−0.040 ± 0.009	0.30 ± 0.07	linear	OCs
[S/H]	−0.081 ± 0.004	0.59 ± 0.03	linear	CCs
[S/H]	−1.624 ± 0.053	1.40 ± 0.05	log	CCs
[S/H]	−0.086 ± 0.009	0.68 ± 0.08	linear	OCs
[O/Fe]	0.003 ± 0.007	−0.04 ± 0.05	linear	CCs
[S/Fe]	−0.037 ± 0.003	0.25 ± 0.03	linear	CCs
[S/Fe]	−0.606 ± 0.047	0.50 ± 0.04	log	CCs

Notes. Based on the data plotted in Figs. 2 and 4. The linear regressions for open clusters are not shown in the quoted figures.

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