Table 6.
Mean values of the metallicity abundances derived from the N2 method (Pettini & Pagel 2004), 12 + log(O/H)N2, as a function of morphological stage, from T = 1 to T = 10.
| T | 12 + log(O/H)N2(1) | 12 + log(O/H)N2(2) |
|---|---|---|
| with dust, H2, HI data | ||
| 1 | 8.78 ± 0.08 (24) | 8.79 ± 0.09 (16) |
| 2 | 8.71 ± 0.05 (21) | 8.74 ± 0.06 (16) |
| 3 | 8.65 ± 0.02 (47) | 8.68 ± 0.02 (31) |
| 4 | 8.65 ± 0.02 (40) | 8.70 ± 0.04 (29) |
| 5 | 8.65 ± 0.02 (54) | 8.65 ± 0.02 (40) |
| 6 | 8.48 ± 0.02 (57) | 8.50 ± 0.03 (31) |
| 7 | 8.49 ± 0.03 (34) | 8.51 ± 0.06 (18) |
| 9 | 8.39 ± 0.03 (62) | 8.43 ± 0.05 (27) |
| 1–10 | 8.57 ± 0.01 (339) | 8.62 ± 0.02 (208) |
Notes. Mean values of the metallicity abundances of all (T = 1–10) galaxies are also collected (last line). The numbers in brackets are the numbers of galaxies taken into account in the computation of mean values.
Values plotted in Fig. 10.
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