Mathematics – Logic
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...332...96l&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 332, Sept. 1, 1988, p. 96-107.
Mathematics
Logic
36
Absorption Spectra, Cosmology, Quasars, Red Shift, Halos, High Resolution, Optical Thickness
Scientific paper
A sample is constructed of 129 QSOs for which are available published data suitable for detecting absorption-line systems that are optically thick to Lyman continuum radiation. From this sample, which covers the redshift range z = 0.36 - 3.78, 53 such Lyman-limit systems are detected. It is found that the systems are uniformly distributed in velocity relative to the background QSOs, as would be expected if they were cosmologically intervening. The redshift distribution of the systems is evaluated, and it is determined that the rate of incidence of the systems does not strongly evolve with redshift; the observed distribution is consistent with nonevolving absorbers in a standard Friedmann cosmology with deceleration parameter q0 = 0.5. This lack of evolution appears to be inconsistent with the evolution that has been found previously for systems selected on the basis of Mg II absorption.
No associations
LandOfFree
An investigation of Lyman-limit absorption in QSO spectra - Indirect evidence for evolution of the multicomponent nature of the absorbers does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with An investigation of Lyman-limit absorption in QSO spectra - Indirect evidence for evolution of the multicomponent nature of the absorbers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An investigation of Lyman-limit absorption in QSO spectra - Indirect evidence for evolution of the multicomponent nature of the absorbers will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-909328