UCSD/Keck Damped Ly{alpha} Abundance Database : J/ApJS/171/29


Authors : Prochaska J.X. orcid , Wolfe A.M., Howk J.C. (hide) , Wolfe A.M., Howk J.C. et..al

Bibcode : 2007ApJS..171...29P (ADS) (Simbad) (Objects) (hide)

CDS Keywords : H I data; QSOs; Spectroscopy; Abundances
UAT : H I line emission, Quasars, Spectroscopy, Chemical abundances

Observation (OC)

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Inserted into VizieR : 22-May-2009
Last modification : 16-Oct-2017

The UCSD/Keck damped Ly{alpha} abundance database a decade of high-resolution spectroscopy. (2007)

Keywords : quasars absorption lines

Abstract:We publish the Keck/HIRES and Keck/ESI spectra that we have obtained during the first 10 years of Keck observatory operations. Our full sample includes 42 HIRES spectra and 39 ESI spectra along 65 unique sight lines providing abundance measurements on about 85 DLA systems. The normalized data can be downloaded from the journal or from our supporting Web site. The database includes all of the sight lines that have been included in our papers on the chemical abundances, kinematics, and metallicities of the damped Ly{alpha} systems. This data has also been used to argue for variations in the fine-structure constant. We present new chemical abundance measurements for 10 damped Ly{alpha} systems and a summary table of high-resolution metallicity ...(more)
Abstract: (hide)
For nearly all observations, the HIRES spectra were acquired using either a 0.8" or 1.1" wide decker (FWHM about 6 and 8km/s, respectively) and the ESI observations were carried out with the 0.5" or 0.75" slit (FWHM about 33 and 44km/s, respectively). All of the HIRES spectra were acquired with the original Tektronix 2048*2048CCD. In general we strove to achieve a final signal-to-noise ratio (S/N) of >15pixel^-1^ (2km/s/pix for HIRES, 11km/s/pix for ESI). ESI has a fixed format that covers the spectral region {lambda}=4000 to 10000{AA}.

  • III/211 : Keck/HIRES Sky Line Atlas (Osterbrock+ 1997)
  • J/ApJ/472/509 : Lyman-alpha Forest in Q0000-26 (Lu+ 1996)

                
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