Table 3.
Mean and standard deviation of 12 + log(O/H) for the Σ(Hα) bins. The values were derived using the direct method (DM) Te([SIII]) and the N2 and O3N2 calibrators from Denicoló et al. (2002) (D), Pettini & Pagel (2004) (PP), and Marino et al. (2013) (M).
| 12 + log(O/H) | ||||||
|---|---|---|---|---|---|---|
| log(Σ(Hα)) | 37–< 38 | 38–< 39 | 39–< 40 | 40–< 41 | 41–< 42 | 42–< 43 |
| UM 462 | ||||||
| DM Te([SIII]) | … | … | … | 8.02 ± 0.22 | 7.98 ± 0.08 | … |
| N2 D | 8.39 ± 0.31 | 8.17 ± 0.29 | 8.09 ± 0.13 | 8.00 ± 0.06 | 7.90 ± 0.03 | … |
| O3N2 PP | 8.44 ± 0.20 | 8.27 ± 0.16 | 8.18 ± 0.10 | 8.07 ± 0.04 | 8.03 ± 0.01 | … |
| N2 PP | 8.33 ± 0.25 | 8.16 ± 0.22 | 8.09 ± 0.10 | 8.02 ± 0.05 | 7.95 ± 0.02 | … |
| O3N2 M | 8.34 ± 0.13 | 8.23 ± 0.11 | 8.16 ± 0.07 | 8.09 ± 0.03 | 8.07±0.01 | … |
| N2 M | 8.28 ± 0.20 | 8.14 ± 0.18 | 8.09 ± 0.10 | 8.02 ± 0.05 | 7.95 ± 0.02 | … |
| log(EW(Hα)) | 1.37 ± 0.22 | 1.67 ± 0.25 | 2.18 ± 0.29 | 2.57 ± 0.16 | 2.88 ± 0.09 | … |
| log(U) | −3.18 ± 0.77 | −2.98 ± 0.54 | −3.0 ± 0.16 | −2.68 ± 0.16 | −2.3 ± 0.10 | … |
| log(σ(Hα)) | 1.55 ± 1.00 | 1.57 ± 0.73 | 1.56 ± 0.32 | 1.55 ± 0.03 | 1.54 ± 0.00 | … |
| IIZw 40 | ||||||
| DM Te([SIII]) | … | … | … | 8.08 ± 0.38 | 7.94 ± 0.24 | 7.80 ± 0.21 |
| N2 D | … | 8.29 ± 0.29 | 8.15 ± 0.21 | 8.13 ± 0.14 | 8.05 ± 0.11 | 7.88 ± 0.09 |
| O3N2 PP | … | 8.34 ± 0.19 | 8.21 ± 0.15 | 8.20 ± 0.13 | 8.11 ± 0.07 | 8.03 ± 0.10 |
| N2 PP | … | 8.26 ± 0.23 | 8.14 ± 0.17 | 8.12 ± 0.11 | 8.07 ± 0.09 | 7.93 ± 0.07 |
| O3N2 M | … | 8.27 ± 0.13 | 8.18 ± 0.10 | 8.18 ± 0.09 | 8.12 ± 0.05 | 8.06 ± 0.06 |
| N2 M | … | 8.22 ± 0.18 | 8.13 ± 0.13 | 8.12 ± 0.11 | 8.07 ± 0.09 | 7.93 ± 0.07 |
| log(EW(Hα)) | … | 1.37 ± 0.24 | 1.86 ± 0.30 | 2.34 ± 0.36 | 2.96 ± 0.18 | 3.14 ± 0.18 |
| log(U) | … | −3.2 ± 0.61 | −3.06 ± 0.35 | −2.92 ± 0.24 | −2.52 ± 0.22 | −1.94 ± 0.19 |
| log(σ(Hα)) | … | 1.57 ± 0.98 | 1.56 ± 0.56 | 1.57 ± 0.43 | 1.57 ± 0.32 | 1.58 ± 0.30 |
Notes. Values are given as mean ± standard deviation. Mean values of log(EW(Hα)) (Å), log(U) and log(σ(Hα)) (km s−1) are also reported in the corresponding Σ(Hα) bins.
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