The Third Data Release of the KODIAQ Survey
Abstract
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 < zem < 6.4 observed with the Echellette Sepctrograph and Imager at moderate resolution (4000 ≤ R ≤ 10,000). DR3 contains 872 spectra available in flux calibrated form, representing a sum total exposure time of ∼2.8 megaseconds. These coadded 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.
- Publication:
-
The Astronomical Journal
- Pub Date:
- January 2021
- DOI:
- 10.3847/1538-3881/abcbf2
- arXiv:
- arXiv:2010.09061
- Bibcode:
- 2021AJ....161...45O
- Keywords:
-
- Lyman limit systems;
- Quasars;
- Damped Lyman-alpha systems;
- Intergalactic medium;
- Circumgalactic medium;
- Double quasars;
- 981;
- 1319;
- 349;
- 813;
- 1879;
- 406;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 25 pages, 8 figures, 2 tables. Accepted for publication in the Astronomical Journal