机译:OPTICAL SPECTROSCOPIC OBSERVATIONS OF BLAZARS AND γ -RAY BLAZAR CANDIDATES IN THE SLOAN DIGITAL SKY SURVEY DATA RELEASE NINE
Yale Center for Astronomy and Astrophysics, Physics Department, Yale University, P.O. Box 208120, New Haven, CT 06520-8120, USA;
INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna, via Gobetti 101, I-40129, Bologna, Italy;
Harvard-Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138, USASLAC National Laboratory and Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, CA 94025, USA;
galaxies: active; quasars: general; methods: statistical; radiation mechanisms: non-thermal; surveys;