Abstract
The analysis of long-slit optical spectra taken of five high-redshift (z∼2-3) radio-loud quasars (QSRs), selected from the imaging survey of Heckman et al (1991, ApJ, 370), is presented. It is confirmed that the QSRs have Lyα emission that is spatially extended by at least several tens of kiloparsecs, with a luminosity of order 10 44 ergs/s. The gas is very active kinematically. After a subtraction of the seeing-scattered light from the broad-line region of the central QSR, line widths in the nebulae of 1000-1500 km/s (FWHM) are found. The gas does not show any globally organized velocity gradients
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