NASA NTRS · 19720040231
Optical spectra of quasi-stellar objects.
Abstract
Account of the emission lines of QSOs, with discussion of the absorption-line spectra and an account of the optical continua. Attention is given to both radio-emitting and radio-quiet QSOs, since there appears to be no distinction in their optical spectra, and objects at all observed redshifts are included.
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Burbidge, E. M.. 1971-01-01. Optical spectra of quasi-stellar objects.. https://ntrs.nasa.gov/citations/19720040231
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