The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment

Abstract

Abstract The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014–2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as “The Cannon”; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release ( N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site ( www.sdss.org ) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V.

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Affiliated Institutions

• Université Paris Cité FR
• University of Wisconsin–Madison US
• Crow Canyon Archaeological Center US
• University of Chile CL
• University of Utah US
• University of Virginia US
• Sorbonne Université FR
• Space Telescope Science Institute US
• Yale University US
• Universidad Bernardo O'Higgins CL
• Aix-Marseille Université FR
• Monash University AU
• Carnegie Observatories US
• National Observatory BR
• Laboratoire de Physique Nucléaire et de Hautes Énergies FR
• University of Toronto CA
• Bates College US
• Universidad de La Laguna ES
• Roche (France) FR
• Universidad Nacional Autónoma de México MX
• European Southern Observatory DE
• University of Pennsylvania US
• Universidade Federal de Santa Maria BR
• Université Claude Bernard Lyon 1 FR
• CEA Paris-Saclay FR
• Sorbonne Paris Cité FR
• The University of Texas at Austin US
• University of California, Irvine US
• Centre National de la Recherche Scientifique FR
• Laboratory for Atmospheric and Space Physics US
• Universidade Federal do Rio Grande do Sul BR
• Sejong University KR
• Valongo Observatory BR
• Humboldt-Universität zu Berlin DE
• University of Arizona US
• Canadian Institute for Theoretical Astrophysics CA
• University of Concepción CL
• Pennsylvania State University US
• University of St Andrews GB
• Northern Kentucky University US
• Korea Institute for Advanced Study KR
• McCormick (United States) US
• New Mexico State University US
• New York University Abu Dhabi AE
• Université Paris-Saclay FR
• Leibniz Institute for Astrophysics Potsdam DE
• Commissariat à l'Énergie Atomique et aux Énergies Alternatives FR
• Kitt Peak National Observatory US
• Université Toulouse III - Paul Sabatier FR
• Lawrence Berkeley National Laboratory US
• University of Cambridge GB
• Centre de Recherche Astrophysique de Lyon FR
• Carnegie Institution for Science US
• Texas Christian University US
• University of Oxford GB
• École Polytechnique Fédérale de Lausanne CH
• Millennium Institute of Astrophysics CL
• University of Nottingham GB
• Instituto de Astrofísica de Canarias ES
• Délégation Paris 7 FR
• Center for Astrophysics Harvard & Smithsonian US
• Western Washington University US
• University of Pittsburgh US
• University of California, Santa Cruz US
• University of Valparaíso CL
• Institut de Recherche sur les Lois Fondamentales de l'Univers FR
• University of California, San Diego US
• University of Birmingham GB
• Vanderbilt University US
• New York University US
• University of Washington US
• Johns Hopkins University US
• Max Planck Institute for Extraterrestrial Physics DE
• University of Portsmouth GB
• Laboratoire d’Astrophysique de Marseille FR
• Université Fédérale de Toulouse Midi-Pyrénées FR
• University of La Serena CL
• Lomonosov Moscow State University RU
• Laboratório Interinstitucional de e-Astronomia BR
• Université Bourgogne Franche-Comté FR
• Universidad de Antofagasta CL
• University of Notre Dame US

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