Exploring the Lyman Forest with VLT/UVES

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dc.creatorCristiani, S.
dc.creatorBianchi, S.
dc.creatorD'Odorico, S.
dc.creatorKim, T. -S.
dc.date2001-09-19
dc.date.accessioned2026-07-07T02:00:03Z
dc.date.available2026-07-07T02:00:03Z
dc.descriptionA sample of 8 QSOs with 1.7 < z_em < 3.7 has been observed with VLT/UVES at a typical resolution 45000 and S/N~40-50. Thanks to the two-arm design of the spectrograph, a remarkable efficiency has been achieved below 400nm and above 800nm, which translates immediately in the possibility of obtaining new results, especially at z<2.5. We report here new insight gained about the evolution of the number density of Ly-a lines, their column density distribution, the ionizing UV background and the cosmic baryon density.
dc.description4 pages Latex, with 2 PostScript figures, to appear in the Proceedings of the Meeting on Gaseous Matter in Galactic and Intergalactic Space, XVIIth IAP Colloquium, Paris, June 2001
dc.identifierhttps://arxiv.org/abs/astro-ph/0109305
dc.identifierhttp://arxiv.org/abs/astro-ph/0109305
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3345
dc.subjectAstrophysics
dc.titleExploring the Lyman Forest with VLT/UVES
dc.typetext

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