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Table 3.
Physical parameters from SED fitting.
| Observed | Single pop | Mixed pop. | Mix.+ty1 (CIG.) | Mix.+AGN (SYN.) | Mix.+ty2 (CIG.) | |
|---|---|---|---|---|---|---|
| sSFR [Gyr−1] | 53 ± 6 | 33 ± 12 | 83 ± 20 | 85 ± 19 | 56 ± 4 | |
| M* [108 M⊙] | 5.6 ± 0.6 | 14.7 ± 1.2 | 3.7 ± 0.8 | 2.1 ± 0.9 | 5.3 ± 0.3 | |
| M*young [108 M⊙] | – | 1.8 ± 0.2 | 1.7 ± 0.2 | 0.5 ± 0.2 | 1.8 ± 0.1 | |
| tyoung [Myr] | – | 4 ± 1 | 6 ± 1 | 0.32 ± 0.15 | 6 ± 1 | |
| told [Myr] | 21 ± 3 | 63 ± 23 | 39 ± 21 | 6 ± 2 | 20 ± 2 | |
| SFR10Myr [M⊙ yr−1] | 24 ± 3† | 30 ± 2 | 18 ± 3 | 18 ± 3 | 18 ± 5 | 18 ± 2 |
| log(LAGN) [erg s−1] | – | – | 44.57 ± 0.04 | 44.6 ± 0.5 | 44.77 ± 0.02 | |
| AV [mag] | < 0.2† | 0.15 ± 0.01 | 0.13 ± 0.02 | 0.04 ± 0.01 | 0.10 ± 0.03 | 0.03 ± 0.01 |
| Z†† [Z⊙] | 0.17 ± 0.03† | – | – | – | 0.16 ± 0.03 | – |
| EW(Hα) [Å] | 547 ± 72 | 983 ± 55 | 932 ± 24 | 870 ± 38 | 540 ± 110 | 572 ± 17 |
| EW(Hβ) [Å] | 140 ± 19* | 175 ± 10 | 169 ± 5 | 166 ± 6 | 170 ± 40 | 146 ± 3 |
| EW([O III]λ5008) [Å] | 786 ± 81 | 1144 ± 63 | 1159 ± 35 | 1080 ± 41 | 840 ± 230 | 932 ± 19 |
Notes. †: Values derived from MIRI/MRS data presented in Álvarez-Márquez et al. (2025). ††: A fixed metallicity value was adopted during the CIGALE fits (see Sect. 3.3). *: EW(Hβ) is derived from Hα and F560W fluxes, assuming Hα/Hβ = 2.86 (see Sect. 3.2).
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