Table C.1.
Boundary constrains for the parameters of Lyα fitting using MCMC method.
| Fit parameters | Constraints |
|---|---|
| Gaussian emission: | |
| Line center, λ0 [Å] | Δλ = 4 |
| Line center (b.l.), λ0, blue [Å]a | λin − 8.93 ∼ λin − 2.23 |
| Line flux, F [erg s−1 cm−2] | (90%−120%)Fin, m |
| Line width, σ [Å]b | (80%−120%/150%)σin, m |
| Voigt absorption: | |
| Column density log(NH/cm−2) | 13 − 20 |
| Doppler parameter b [km s−1] | 40 − 400 |
| Absorber redshift zc | Δz = 0.004 |
| Absorber redshift zd | Δz = 0.005 |
Notes. The lower index “in” stands for initial. λin is the observed Lyα wavelength calculated using systemic redshift derived from He II fitting (see Sect. 4.2). The Fin, m and σin, m are line flux and width derived from primary fitting of the emission using only the red wing as input. The lower index “m” indicates both the systemic and blueshifted components have the similar boundary setup. The boundaries of the redshift, z, of different absorbers are customized according to their sensitivities to the parameters tested in running the fitting.
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