Table 4.
Results of the stellar population PPXF fit obtained for each galaxy with MDEGREE = 10 and ADEGREE = −1 in the spectra range from 3500–6500 Å, for REGUL = 0 and for REGUL = MAX_REGUL (listed in the table for each system).
| KiDS | REGUL | Age | [M/H] | χ′2 | Age of the | [α/Fe]⋆ | zform |
|---|---|---|---|---|---|---|---|
| (Gyr) | (dex) | Universe (Gyr) | (dex) | ||||
| J0224−3143 | 0 | 9.1 ± 0.4 | 0.24 ± 0.03 | 0.9920 | 9.5 | 0.3 ± 0.1 | 10.65 |
| J0224−3143 | 11 | 8.6 ± 0.4 | 0.24 ± 0.03 | 1.0297 | 9.5 | 0.3 ± 0.1 | 6.02 |
| J0314−3215 | 0 | 9.1 ± 0.5 | 0.10 ± 0.04 | 1.0000 | 10.4 | 0.3 ± 0.1 | 4.65 |
| J0314−3215 | 600 | 7.9 ± 0.5 | 0.10 ± 0.04 | 1.0267 | 10.4 | 0.3 ± 0.1 | 2.64 |
| J0847+0112 | 0 | 11.0 ± 0.3 | 0.35 ± 0.03 | 1.0001 | 11.5 | 0.2 ± 0.1 | 9.20 |
| J0847+0112 | 62 | 10.6 ± 0.3 | 0.34 ± 0.03 | 1.0264 | 11.5 | 0.2 ± 0.1 | 6.04 |
Notes. The uncertainties associated with the measurements include both the random error obtained directly from the fit and the systematics, estimated repeating the fit multiple times, changing the configuration and setup, also including the regularization of the fit (always between 0 and MAX_REGUL). We also list the age of the Universe at the redshifts of the system, the [α/Fe] inferred from the line indices, and the redshift at which these objects formed. See the text (Sect. 3.4) and Appendix C for more details.
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