2003/10/10 by S. A. Levshakov, Sergei A. Levshakov, Levshakov, Sergei A.
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #Astrophysics and Star Formation Studies #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0310292
6 pages, 3 figures, to appear in `Recycling Intergalactic and Interstellar Matter', IAU Symp. Ser., vol. 217, eds. P.-A. Duc, J. Braine and E. Brinks, 2004
arxiv created 2003/10/10 · openalex publication_date 2003/10/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Both high resolution spectra of QSOs observed at the 8-10m telescopes and advanced methods of data analysis are crucial for accurate measurements of the chemical composition and physical parameters of the intervening clouds. An overview of our recent results obtained with the Monte Carlo inversion (MCI) procedure is presented. This includes: (1) variations of the shape of the local background ionizing continuum in the 1-5 Ryd range at redshift z ~ 2.8-3.0; (2) an inverse correlation between the measured metallicity, [C/H], and the absorber line-of-sight linear size, L; (3) a functional dependence between the line-of-sight velocity dispersion, sigmav, and L.