Results of a homogeneous survey of absorption lines in QSOs of small and intermediate emission redshift

Journal Article · Wed Nov 14 23:00:00 EST 1979 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/157470· OSTI ID:5637134

Weymann, R J; Williams, R E; Peterson, B M; Turnshek, D A

Results are presented for a spectroscopic survey of an intermediate (1.20z/sub em/ have velocity dispersion very similar to that expected if the absorbing material and the QSO are members of clusters of galaxies, and we interpret systems with vertical-bar z/sub em/-z/sub abs/ vertical-bar< or approx. =3000 km s/sup -1/ as predominantly associated with galaxy clusters. The remaining absorption is due to material ejected by QSO. We suggest that broad-line absorption systems are recently ejected gas which eventually evolves into multiple sharp-line systems, two examples of which are found in our survey. It is suggested that the distribution of C IV and Mg II absorption systems in redshift can be explained by assuming that the absorbing gas in intervening clusters of galaxies is the same as the gas in clusters which contain QSOs, with the exception that the QSO--containing cluster gas has higher ionization.

• Research Organization: Steward Observatory, University of Arizona
• OSTI ID: 5637134
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 233:4; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics &amp; Cosmology-- Quasi-Stellar
Radio
&amp; X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
ATOMIC IONS
CARBON IONS
CHARGED PARTICLES
COSMIC RADIO SOURCES
GALAXIES
GALAXY CLUSTERS
INTERGALACTIC SPACE
IONS
MAGNESIUM IONS
MATHEMATICS
QUASARS
RED SHIFT
SPACE
SPECTRA
SPECTRAL SHIFT
SPECTROSCOPY
STATISTICS