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    • Blanton, Michael R.; Bershady, Matthew A.; Abolfathi, Bela; Muñoz Vidal, Ricardo Rodrigo; Santana, Felipe (IOP Publishing Ltd., 2017)
      We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands ...