Table 2.
Parameters and priors adopted for each configuration used in the full spectrum fitting.
| Spectrum | Photometry | log(σvel/km s−1) | Age [Gyr] | log(Mformed/M⊙) | log(Z/Z⊙) | SFH | SFH parameters | |
|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | |
| Baseline | ✓ | ✓ | 𝒰(1, 2.7) | 𝒰(0, 20) | 𝒰(0, 13) | 𝒰(−0.85, 0.24) | DED | τ ∈ 𝒰(0, 1) |
| τ ∈ 𝒰(0, 20) | ||||||||
| Config. 1 | ✓ | ✓ | 𝒰(1, 2.7) | 𝒰(0, 20) | 𝒰(0, 13) | 𝒰(−0.85, 0.24) | DPL | log(α)∈𝒰(−2, 3) |
| log(β)∈𝒰(−2, 3) | ||||||||
| Config. 2 | ✓ | ✘ | 𝒰(1, 2.7) | 𝒰(0, 20) | 𝒰(0, 13) | 𝒰(−0.85, 0.24) | DED | τ ∈ 𝒰(0, 1) |
Notes. Columns 1 and 2 indicate if spectrum and photometry are considered (✓) or not (✘) in the fit. Columns 3–6 show the type of prior and the range for some main parameters. Columns 7 and 8 report the type of SFH and relative parameters. The acronyms DED and DPL refer respectively to the delayed exponentially declining and double-power-law SFHs, while the symbol 𝒰 indicates a uniform prior with the associated range.
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