Published online by Cambridge University Press: 12 April 2016
We present some of the results of a preliminary statistical study of 20 QSOs. We compare equivalent widths and widths at 40–80% of flux maximum of the Lyα, Si IVλ1400, C IV λ1549, and C III] λ1909 lines between radio-loud and radio-quiet QSO subsamples and with previously reported findings.
Observations reported here were obtained in part at the Multiple Mirror Observatory, a joint facility of the Smithsonian Institution and the University of Arizona, and in part at Palomar Observatory, California Institute of Technology.