The Profiles of H-Beta and [OIII] 5007 in Radio-Loud Quasars

Abstract

Moderate-resolution spectra of the H$\beta$--[O III] $\lambda$5007 region have been obtained for 41 radio-loud quasars in order to investigate relationships among their broad- and narrow-line profiles, radio structures, and X-ray properties. Spectra from the literature have been included to form a data set of 60 radio-loud quasars. A variety of statistical analyses have been performed, identifying several strong, related trends. The FWHM, equivalent width, and degree of redward asymmetry of H$\beta$ increase with decreasing radio core dominance (an orientation indicator), whereas the FWHM of [O III] $\lambda$5007 increases with luminosity and ${\alpha }_{ox}$. These and other effects are briefly discussed.

To appear in the Astrophysical Journal Supplement. Warning: A large paper, 360kb uuencoded, compressed postscript, including figures (except Fig. 1a-g, the spectra, which are at the ftp site below) and tables. The entire paper is also available by anonymous ftp at ftp://pan.as.utexas.edu/pub/HBpreprint/

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