Table B.3.
Parameters considered for fitting HST+JWST photometric data of CDF-S XT1 and XT2 host galaxies.
| Parameter | Definition | Prior |
|---|---|---|
| (1) | (2) | (3) |
| za | Redshift | 𝒰 ∼ [0.5, 4.0] |
| tage (Gyr) | Age of the galaxy at the time of observation | 𝒰 ∼ [0.1, 15.0] |
| τ (Gyr) | e-folding time of exponential SFH | 𝒰 ∼ [0.1, 10.0] |
| log(MF/M⊙) | Total mass formed | 𝒰 ∼ [6.0, 13.0] |
| log(Z/Z⊙) | Stellar metallicity | 𝒰 ∼ [ − 1.0, 0.5] |
| log(U) | Nebular component | 𝒰 ∼ [ − 4.0, −1.0] |
| AV, dust | Dust attenuation | 𝒰 ∼ [0.0, 4.0] |
Notes. The packages used for the fitting process are Bagpipes (Carnall et al. 2018) and Prospector (Leja et al. 2017). Columns 1 and 2: SFH parameters and their definitions, respectively. Column 3: prior distribution per parameter. a The redshift as a free parameter is valid only for CDF-S XT1, while for CDF-S XT2, its redshift is fixed to z = 3.4598.
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