Table 5.
Best-fit results of the unconstrained shell model.
| Shell model results from unconstrained fitting |
|||||||
|---|---|---|---|---|---|---|---|
| GRB host | Δz | log(NHI/cm−2) | Vexp | log(T/K) | τd | FWHMi(Lyα) | EWi(Lyα) |
| [km s−1] | [km s−1] | [Å] | |||||
| GRB 011211 |
 |
 |
 |
 |
 |
 |
 |
| GRB 021004 |
 |
 |
 |
 |
 |
 |
 |
| GRB 060926 |
 |
 |
 |
 |
 |
 |
 |
| GRB 070110 |
 |
 |
 |
 |
 |
 |
 |
Notes. Δz = (zfit − zhost)×c, where zfit is the Lyα redshift of the best fit, zhost is the redshift derived from the X-shooter emission lines (Table 6), and c is the speed of light; log(NHI/cm−2) is the HI column density of the shell; Vexp is the shell expansion velocity; log(T/K) is the temperature of the gas; τd is the dust optical depth; FWHMi(Lyα) and EWi(Lyα) are the intrinsic FWHM and equivalent width of the Lyα line, respectively.
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