3 papers
astro-ph.GA2026
Detection of an Extended Ly Halo around a Broad Absorption Line Quasar with the Keck Cosmic Web Imager
Raymond P. Remigio, Aaron J. Barth, Feige Wang +6
We present the first results from a program searching for extended Ly halos around high redshift () quasars using the red channel of the Keck Cosmic Web Imager…
astro-ph.GA2025
Unmixed metals: Variations in the enrichment of z~4 sub-damped Lyman alpha systems
Trystyn A. M. Berg, Louise A. Welsh, Ryan J. Cooke +4
The chemical abundance patterns of near-pristine objects provide important constraints on the properties of the first generations of stars in the Universe. We present the chemical…
astro-ph.IM2024
Robust support for semi-automated reductions of Keck/NIRSPEC data using PypeIt
Adolfo S. Carvalho, Greg Doppmann, Kyle B. Westfall +7
We present a data reduction pipeline (DRP) for Keck/NIRSPEC built as an addition to the PypeIt Python package. The DRP is capable of reducing multi-order echelle data taken both be…