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Strong associated C 4 absorption in low redshift quasarsIUE spectra of quasars were used to determine the frequency of occurrence of strong associated C 4 absorption systems at low red shifts. Four systems are found with rest frame equivalent width (REW) greater than 5 angstroms in the spectra of 38 quasars. This rate of occurrence of 0.12 is not significantly different from the rate of 0.064 determined for high red shift quasars. The detected strong associated systems are all in low red shift quasars which have been imaged from the ground. One of the quasars is unusual, having two nuclei, a close companion and distorted isotopes. Two of the others also have close companion galaxies at projected distances of under 100 kpc. The conclusion was made that a much larger sample is needed.
Document ID
19900019153
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Tytler, David (Columbia Univ. New York, NY, United States)
Date Acquired
September 6, 2013
Publication Date
September 5, 1990
Subject Category
Astronomy
Report/Patent Number
CAL-1828
NAS 1.26:186936
NASA-CR-186936
Accession Number
90N28469
Funding Number(s)
CONTRACT_GRANT: NAG5-1240
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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