HD-LLS Dataset¶
This document describes the HD-LLS dataset.
Sources¶
The high dispersion Lyman Limit System (HD-LLS) sample is a set of echelle and echellette spectra from the Keck and Magellan observatories acquired by Prochaska et al. (2015) for the analysis of z~3 LLS. The quasars are a heterogenous set of sources useful for such analysis (ie. bright).
Meta Data¶
The meta data provided with HD-LLS also includes information on the LLS analyzed:
| Key | Type | Description |
|---|---|---|
| Z_LLS | float | Absorption redshift of the LLS |
| log_NHI | float | log10 of the HI column density |
| sig(log_NHI) | float(2) | log10 of the HI column density uncertainty (lower/upper) |
Spectra¶
These are the DR1 data release of HD-LLS. See also: HD-LLS DR1