Some spectral properties of the quasar ultraviolet bump

In the present work the part of the quasar UV-optical bump within the wavelength range 1210-1450\AA\ was studied with the help of composite spectra compiled from the samples of SDSS DR7 spectra with the similar spectral index \alpha_{\lambda} within 1270-1480 \AA. This division allowed to see weak emission lines, which... Show more