Associated C IV absorption in radio-loud QSOs - The 3C mini-survey

Journal Article · Sat Aug 01 04:00:00 EDT 1987 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114468· OSTI ID:5870137

Anderson, S F; Weymann, R J; Foltz, C B; Chaffee, Jr, F H

A spectroscopic survey at 1 A resolution of twelve 3C and 3CR QSOs reveals a very high incidence of C IV absorption complexes within + or - 5000 km/s of the C IV 1548, 1550-A emission-line redshift. Such associated C IV absorption is found to be strong (rest-frame equivalent width equal to or greater than 1.5 A) in six of these powerful, steep-spectrum radio sources, while four others show weaker associated absorption. Such strong associated C IV complexes with z(abs) approximaely equal to z(em) are comparatively rare in a sample of radio-quiet QSOs investigated previously. The evidence for possible correlations with various radio properties is briefly discussed, although no correlations are thus far confirmed to be statistically significant. 29 references.

• Research Organization: Mount Wilson and Las Campanas Observatories, Pasadena, CA; Multiple Mirror Telescope Observatory, Tucson, AZ
• OSTI ID: 5870137
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 94; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
CARBON
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTRA
NONMETALS
QUASARS
RADIATIONS
RADIOWAVE RADIATION
RED SHIFT
SPECTRA
SPECTROSCOPY