We present and make publicly available the third data release (DR3) of the Keck Observatory Database of Ionized Absorption toward Quasars (KODIAQ) survey. KODIAQ DR3 consists of a fully-reduced sample of 727 quasars at 0.1 < z < 6.4 observed with ESI at moderate resolution (4000 < R < 10000). DR3 contains 872 spectra available in flux calibrated form, representing a sum total exposure time of approximately 2.8 megaseconds. These co-added spectra arise from a total of 2753 individual exposures of quasars taken from the Keck Observatory Archive (KOA) in raw form and uniformly processed using a data reduction package made available through the XIDL distribution. DR3 is publicly available to the community, housed as a higher level science product at the KOA and in the igmspec database.
@article{arxiv.2010.09061,
title = {The Third Data Release of the KODIAQ Survey},
author = {John M. O'Meara and Nicolas Lehner and J. Christopher Howk and J. Xavier Prochaska},
journal= {arXiv preprint arXiv:2010.09061},
year = {2021}
}
Comments
25 pages, 8 figures, 2 tables. Accepted for publication in the Astronomical Journal