Unmixed metals: Variations in the enrichment of z~4 sub-damped Lyman alpha systems

2025/07/15 by Trystyn A. M. Berg, Berg, Trystyn A. M., Louise Welsh +11
Engineering · Materials Science · #Astrophysics of Galaxies (astro-ph.GA) #Calibration and Measurement Techniques #FOS: Physical sciences #Satellite Image Processing and Photogrammetry #Silicone and Siloxane Chemistry

paper · pdf · doi:10.48550/arxiv.2507.11602

openalex publication_date 2025/07/15 · openalex created_date 2025/10/14 · openalex updated_date 2026/07/28

Abstract

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 abundances of five very metal-poor ([M/H]<-2.5) sub damped Lyman alpha systems (subDLAs) covering the redshift range 3.6

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