More spectroscopy of the fuzz around QSOs - Additional evidence for two types of QSO

The nebulosities around five optically selected (by UV excess) luminous QSOs have been observed spectroscopically. 3C 273, which has been observed off-nucleus before, has nebulosity dominated by a stellar continuum. TON 202, a steep-spectrum radio source, has nebulosity dominated by strong Balmer and [O III] emission lines. In addition, the spectra of the nuclear regions of 12 low-luminosity QSOs are presented. Nebulosity spectra of these objects were obtained earlier. A sample of 24 objects with surrounding nebulosities is statistially analyzed. It is shown that these objects can be separated into two groups, defined by the equivalent width of the [O III] λ5007 emission line in the nebulosity. The differences in the fundamental properties of these two groups are worked out and the implications for theoretical models of active galactic nuclei are discussed.