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  • H-alpha emission lines in high-redshift quasars 

    ESPEY, BRIAN RUSSELL; Carswell, R. F.; Bailey, J. A.; Smith, M. G.; Ward, M. J. (1989)
    Infrared spectra have been obtained of the H-alpha lines in 18 medium- to high-redshift QSOs and optical spectra taken nearly simultaneously to measure the strong UV line. It is found that the H-alpha line is redshifted ...