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Optimal extraction of quasar Lyman limit absorption systems from the IUE archiveThe IUE archive contains a wealth of information on Lyman limit absorption systems (LLS) in quasar spectra. QSO spectra from the IUE data base were optimally extracted, coadded, and analyzed to yield a homogeneous samples of LLS at low red shifts. This sample comprise 36 LLS, twice the number previously analyzed low z samples. These systems are ideal for the determination of the origin, redshift evolution, ionization, velocity dispersions and the metal abundances of absorption systems. Two of them are also excellent targets for the primordial Deuterium to Hydrogen ratio.
Document ID
19920016493
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Tytler, David (California Univ., San Diego La Jolla, CA, United States)
Date Acquired
September 6, 2013
Publication Date
May 10, 1992
Subject Category
Astronomy
Report/Patent Number
NAS 1.26:190335
NASA-CR-190335
Report Number: NAS 1.26:190335
Report Number: NASA-CR-190335
Accession Number
92N25736
Funding Number(s)
CONTRACT_GRANT: NAG5-1317
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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