Evidence for kinematic variation with ionization level in quasars

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · Publ. Astron. Soc. Pac.; (United States)

DOI:https://doi.org/10.1086/131649· OSTI ID:5802370

Mathews, W G; Wampler, E J

New observations of broad linewidths for CIV 1548 and MgII 2800 in quasars are combined with previously published widths. CIV 1548 is systematically broader. The kinematics and geometry of the broad line-emitting gas evidently depend on the ionization level. A single photoionized cloud is therefore a poor approximation to typical conditions in the line-emitting gas. These results also suggest that the acceleration mechanism is less efficient for more optically thick gas clouds. 28 references.

• Research Organization: California Univ., Santa Cruz
• OSTI ID: 5802370
• Journal Information: Publ. Astron. Soc. Pac.; (United States), Journal Name: Publ. Astron. Soc. Pac.; (United States) Vol. 97; ISSN PASPA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
ACCELERATION
ALKALINE EARTH METALS
CARBON
COSMIC RADIO SOURCES
DATA
ELEMENTS
EXPERIMENTAL DATA
GALAXIES
INFORMATION
IONIZATION
LINE WIDTHS
MAGNESIUM
METALS
NONMETALS
NUMERICAL DATA
PHOTOIONIZATION
QUASARS
SEYFERT GALAXIES
SPECTRA