Alpha-element abundance patterns in star-forming regions of the Local Universe

Open Access

Table 1

Mean and median abundance ratios per element X and type of object.

X	Type	No.	Mean 12+log(O/H) (dex)	Mean log(X/O) (dex)	Median log(X/O) (dex)	log(X/O) $_{⊙}^{(a)}$ $$^{(a)}_\odot$ (dex)
Ne	SFGs	671	8.02 ± 0.26	−0.64 ± 0.07	−0.64	−0.63 ± 0.06
Ne	H II regions	557	8.37 ± 0.23	−0.71 ± 0.16	−0.71	−0.63 ± 0.06

S	SFGs	492	8.06 ± 0.24	−1.63 ± 0.13	−1.65	−1.57 ± 0.05
S	H II regions	441	8.41 ± 0.26	−1.54 ± 0.19	−1.58	−1.57 ± 0.05

Ar	SFGs	506	8.06 ± 0.24	−2.37 ± 0.12	−2.38	−2.31 ± 0.11
Ar	H II regions	447	8.39 ± 0.26	−2.30 ± 0.20	−2.33	−2.31 ± 0.11

Notes. ^(a) Asplund et al. (2021).

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