A Main Sequence for Quasars
نویسندگان
چکیده
1 INAF, Osservatorio Astronomico di Padova, Padua, Italy, 2 Instituto de Astronomía, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico, 3 Instituto de Astrofísica de Andalucía (CSIC), Granada, Spain, 4 Dipartimento di Fisica e Astronomia “Galileo Galilei”, Università di Padova, Padova, Italy, 5 Belgrade Astronomical Observatory, Belgrade, Serbia, 6 INAF, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Bologna, Italy
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