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Table 4.
CIGALE adopted parameters and properties to fit the SEDs of the target galaxies.
| Parameter | Value | Units | Description |
|---|---|---|---|
| SFH: sfhdelayed module – All galaxies | |||
| t | 0−13 500 | Myr | SFH range |
| τ | 100, 300, 500, 800, 1000, 1200 | Myr | e-folding timescale of SF |
| 1500, 2000, 2500, 3000, 4000, 5000 | |||
| SSPs: uvupturn module – All galaxies | |||
| Z | 0.01, 0.02, 0.04 | Metallicity | |
| T | 0 (no Upturn), 25 000, 35 000, 40 000 | K | Temperature of the upturn component |
| f | 0 | Fuel parameter. 0: low fuel, 1: high fuel. | |
| See Sect. 5.1. | |||
| Dust Attenuation: dustatt_modified_starburst module – For M84, M86, M87 | |||
| E(B − V)young | 0, 0.005, 0.01, 0.02, 0.05, 0.1, 0.3 | mag | Stellar colour excess of the young populations. |
| E(B − V)old | 0, 0.0025, 0.005, 0.01, 0.025, 0.05, 0.15 | mag | Stellar colour excess of the old populations. |
| E(B − V) factor | 0.5 | mag | Conversion factor between young and old. |
| uv_bump_amplitude | 3 | Amplitude of the UV bump | |
| powerlaw_slope | −0.25 | Slope δ of the attenuation powerlaw | |
| Properties – All galaxies | |||
| sfh.sfr | from VESTIGE images | M⊙/yr | 5σ upper limit on star formation rate. |
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