Franco D. Albareti, Universidad Autónoma de Madrid, Spain
Carlos Allende Prieto, Instituto de Astrofísica de Canarias, Spain
Andres Almeida, Universidad de La Serena, Chile
Friedrich Anders, Leibniz-Institut fuer Astrophysik Potsdam (AIP), Germany
Scott Anderson, University of Washington
Brett H. Andrews, University of Pittsburgh
Alfonso Aragón-Salamanca, University of Nottingham, UK
Maria Argudo-Fernández, Universidad de Antofagasta, Chile
Eric Armengaud, Centre d’Etudes Saclay, France
Eric Aubourg, University of Paris Diderot, France
Vladimir Avila-Reese, Universidad Nacional Autónoma de México, Mexico
Carles Badenes, University of Pittsburgh
Stephen Bailey, Lawrence Berkeley National Laboratory
Beatriz Barbuy, Universidade de São Paulo, Brazil
Kat Barger, Texas Christian University
Jorge Barrera-Ballesteros, Johns Hopkins University
Curtis Bartosz, University of Washington
Sarbani Basu, Yale University
Dominic Bates, University of St Andrews, UK
Giuseppina Battaglia, Instituto de Astrofísica de Canarias, Spain
Falk Baumgarten, Leibniz-Institut fuer Astrophysik Potsdam (AIP), Germany
Julien Baur, Centre d’Etudes Saclay, France
Julian Bautista, University of Utah
Timothy C. Beers, University of Notre Dame
Francesco Belfiore, University of Cambridge, UK
Matthew Bershady, University of Wisconsin - Madison
Sara Bertran de Lis, Instituto de Astrofísica de Canarias, Spain
Jonathan C. Bird, Vanderbilt University
Dmitry Bizyaev, Apache Point Observatory
Guillermo A. Blanc, Observatories of the Carnegie Institution for Science
Renbin Yan, University of KentuckyFollow
Kai Zhang, University of Kentucky


The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) began observations in 2014 July. It pursues three core programs: the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2), Mapping Nearby Galaxies at APO (MaNGA), and the Extended Baryon Oscillation Spectroscopic Survey (eBOSS). As well as its core program, eBOSS contains two major subprograms: the Time Domain Spectroscopic Survey (TDSS) and the SPectroscopic IDentification of ERosita Sources (SPIDERS). This paper describes the first data release from SDSS-IV, Data Release 13 (DR13). DR13 makes publicly available the first 1390 spatially resolved integral field unit observations of nearby galaxies from MaNGA. It includes new observations from eBOSS, completing the Sloan Extended QUasar, Emission-line galaxy, Luminous red galaxy Survey (SEQUELS), which also targeted variability-selected objects and X-ray-selected objects. DR13 includes new reductions of the SDSS-III BOSS data, improving the spectrophotometric calibration and redshift classification, and new reductions of the SDSS-III APOGEE-1 data, improving stellar parameters for dwarf stars and cooler stars. DR13 provides more robust and precise photometric calibrations. Value-added target catalogs relevant for eBOSS, TDSS, and SPIDERS and an updated red-clump catalog for APOGEE are also available. This paper describes the location and format of the data and provides references to important technical papers. The SDSS web site,, provides links to the data, tutorials, examples of data access, and extensive documentation of the reduction and analysis procedures. DR13 is the first of a scheduled set that will contain new data and analyses from the planned ~6 yr operations of SDSS-IV.

Document Type


Publication Date


Notes/Citation Information

Published in The Astrophysical Journal Supplement Series, v. 233, no. 2, 25, p. 1-25.

© 2017. The American Astronomical Society. All rights reserved.

The copyright holder has granted the permission for posting the article here.

Due to the large number of authors, only the first 30 and the authors affiliated with the University of Kentucky are listed in the author section above. For the complete list of authors, please download this article.

Digital Object Identifier (DOI)

Funding Information

Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah.

Related Content