UBVRI observations of quasars
UBVRI observations of 37 QSOs are reported. The sample is considered as a good representation of the bright (V not greater than 17) quasars in the compilation by Hewitt and Burbidge (1980). The continuum has a steeper slope in the ultraviolet as indicated by the correlation between the blue colors and the redshift. That spectral region appears to
Moles, M. et al.
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1985