1997/03/18 by Benedetta Ciardi, Andrea Ferrara · 29 citations
Physics and Astronomy · #Cold dark matter #Dark Matter and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy formation and evolution #Gamma-ray bursts and supernovae #Halo #Metallicity #Population #Redshift #Supernova #astro-ph
paper · pdf · doi:10.1086/310728
published in The Astrophysical Journal 483(1), L5-L8 (IOP Publishing) · 9 pages, 3 figures, LaTeX, ApJL submitted
arxiv created 1997/03/18 · openalex publication_date 1997/07/01 · openalex created_date 2016/06/24 · arxiv updated 2016/08/30 · openalex updated_date 2026/08/05
We present a semi-analytical model to test the hypothesis that Lyα QSO absorption lines originate in gaseous halos produced by multiple supernova explosions occurring in Population III objects in a CDM cosmological scenario hoping to assess the validity of CDM models and/or constrain their parameters. The preliminary results indicate that the range of N H I , redshift distribution and metallicity of clouds are well reproduced by CDM if they are associated with galaxy halos or groups. Firm conclusions on clouds with N H I ≤ 10 14 cm -2 need a more refined study.