Table 3.
Summary of the best-fit relation parameters.
| Panel A: MZR from UV absorption lines (1501 and 1719 Å) of VANDELS selected galaxies in this work (Fig. 5, left). | |||||
|---|---|---|---|---|---|
| Bin # | Stellar mass range | # Galaxies | S/N | log10(M*/M⊙)med | log10(Z/Z⊙) |
| 1 | 8.3 < log10(M*/M⊙) < 9.25 | 207 | 30.8 | 9.0 ± 0.2 | −1.08 ± 0.22 |
| 2 | 9.25 < log10(M*/M⊙) < 9.5 | 147 | 34.8 | 9.39 ± 0.06 | −0.84 ± 0.16 |
| 3 | 9.5 < log10(M*/M⊙) < 9.75 | 184 | 49.8 | 9.62 ± 0.06 | −0.85 ± 0.11 |
| 4 | 9.75 < log10(M*/M⊙) < 10 | 110 | 39.8 | 9.84 ± 0.06 | −0.63 ± 0.11 |
| 5 | 10 < log10(M*/M⊙) < 10.6 | 83 | 32.4 | 10.17 ± 0.1 | −0.61 ± 0.13 |
| Panel B: Redshift dependence of the MZR (Fig. 5, right). | |||||
| Bin # | Stellar mass range | # Galaxies | S/N | log10(M*/M⊙)med | log10(Z/Z⊙) |
| 2 < z < 3 | |||||
| 1 | 8.8 < log10(M*/M⊙) < 9.5 | 50 | 33.3 | 9.33 ± 0.10 | −0.82 ± 0.14 |
| 2 | 9.5 < log10(M*/M⊙) < 9.7 | 50 | 36 | 9.57 ± 0.03 | −0.81 ± 0.14 |
| 3 | 9.7 < log10(M*/M⊙) < 9.9 | 40 | 31.3 | 9.79 ± 0.04 | −0.67 ± 0.15 |
| 4 | 9.9 < log10(M*/M⊙) < 10.6 | 48 | 33.6 | 10.09 ± 0.11 | −0.59 ± 0.12 |
| 3 < z < 5 | |||||
| 5 | 8.3 < log10(M*/M⊙) < 9.4 | 247 | 27.5 | 9.1 ± 0.18 | −1.13 ± 0.23 |
| 6 | 9.4 < log10(M*/M⊙) < 9.7 | 148 | 30.7 | 9.56 ± 0.08 | −0.83 ± 0.17 |
| 7 | 9.7 < log10(M*/M⊙) < 10.6 | 135 | 31.7 | 9.92 ± 0.15 | −0.78 ± 0.15 |
| Panel C: β vs. Z* relation (Fig. 8). | |||||
| Bin # | UV slope range | # Galaxies | S/N | βmed | log10(Z/Z⊙) |
| 1 | −2.5 < β < −1.7 | 308 | 52 | −1.98 ± 0.18 | −0.93 ± 0.10 |
| 2 | −1.7 < β < −1.3 | 200 | 53 | −1.51 ± 0.10 | −0.72 ± 0.07 |
| 3 | −1.3 < β < −0.5 | 65 | 26 | −1.10 ± 0.11 | −0.45 ± 0.16 |
Notes. Each panel of the table shows, for each bin, the stellar mass range, the number of galaxies falling in the bin, the average S/N of the stack, the median stellar mass of the galaxies, and the stellar metallicity computed from the stack using the 1501 and 1719 indexes (as explained in the text).
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