Quasar Absorption Line Survey - Cycle 3 Supplemental

Details Quasar Absorption Line Survey - Cycle 3 Supplemental Quasar Absorption Line Survey - Cycle 3 Supplemental

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993hst..prop.5224b&link_type=abstract

HST Proposal ID #5224

Physics

Hst Proposal Id #5224

Scientific paper

This file contains observations that are part of supplemental time cycle 3 allocation. This allocation is for 25 hours of spacecraft time. The Absorption Line Survey of bright quasars provides a homogeneous data base for studying fundamental questions about the origin and evolution of gaseous systems in the universe. The initial results determine at small redshifts the number densities of Ly-ALPHA systems, of metal-lines and extragalactic halos, of Lyman-limit systems, of associated absorption systems, and the shapes and intensities of quasar emission lines and spectral energy distributions. The survey reveals that much of the sky is covered by high or very high velocity metal-line clouds present in the Galactic halo. A larger sample, which includes the requested Cycle 3 HIGH Priority Obs., required to answer many important questions. (See abstract for Part 1, P4581)

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