The High Dispersion Lyman Limit (HD-LLS) Sample

These pages give tables and spectra of the first data release (DR1) of LLS surveyed at high-dispersion with the HIRES, ESI, MIKE and MAGE spectrometers. We also provide the papers of reference for this material. Please reference these when appropriate.

Data Products

• Tarball of all HD-LLS Spectra (DR1; 154Mb): All of the spectra comprising the DR1 of the HD-LLS Sample.
• IGMSpec DB (v0.1; 5.8Gb):
• Summary Table: Summary table of key properties FITS
• JSON file Ions: JSON summary file of all the ionic column densities from DR1 of the HD-LLS Sample.
• Metallicity PDFs: HD5 file providing the metallicity PDFs for each of the LLS analyzed in Fumagalli+16.

• pyigm: Python package (to be affiliated to astropy) that includes routines for reading in HD-LLS.

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Publications

• The Keck + Magellan Survey for Lyman Limit Absorption. I. The Frequency Distribution of Super Lyman Limit Systems, O'Meara et al. ApJ, 2007, 656, 666 (astro-ph/0610726) ADS
• The Keck + Magellan Survey for Lyman Limit Absorption. II. A Case Study on Metallicity Variations, Prochter et al. ApJ, 2010, 708, 1221 (astro-ph/0912.0293) ADS
• The Keck + Magellan Survey for Lyman Limit Absorption III: Sample Definition and Column Density Measurements, Prochaska et al. 2015, ApJS, 221, 2 ADS
• The physical properties of z > 2 Lyman limit systems: new constraints for feedback and accretion models; Fumagalli, O'Meara, & Prochaska 2016, MNRAS, 455, 4100 ADS
• Supersolar Super-Lyman Limit Systems, Prochaska et al. 2006, ApJ, 648, L97 (astro-ph/0606573) ADS
• The Deuterium-to-Hydrogen Abundance Ratio toward the QSO SDSS J155810.16-003120.0, O'Meara et al. 2006, ApJ, 649, L61 (astro-ph/0608302) ADS