2000/06/21 by M. Demiański, M. Demianski, А. G. Doroshkevich +2
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Baryon #Dark matter #Galaxies: Formation, Evolution, Phenomena #Galaxy #Physics #Population #Redshift #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1046/j.1365-8711.2000.03861.x
published as Mon.Not.Roy.Astron.Soc. 318 (2000) 1177 · 13 pages, 5 figures, accepted in MNRAS
arxiv created 2000/06/21 · openalex publication_date 2000/11/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The observed redshift distribution of Lyα lines and metal systems is examined in order to discriminate and to trace the evolution of structure elements observed in the galaxy distribution, at small redshifts, and to test the theoretical description of structure evolution. We show that the expected evolution of a filamentary component of structure describes quite well the redshift distribution of metal systems and stronger Lyα lines with log(NH i)⩾14, at z⩽3. The redshift distribution of weaker Lyα lines can be attributed to the population of poorer structure elements (Zel'dovich pancakes), which were formed at high redshifts from the invisible dark matter and non-luminous baryonic matter, and which at lower redshifts are mainly merged and dispersed.