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


Bela Abolfathi, University of California, Irvine
D. S. Aguado, Instituto Astrofisico de Canarias
Gabriela Aguilar, Universidad Nacional Autónoma de México
Carlos Allende Prieto, Instituto Astrofisico de Canarias
Andres Almeida, Universidad de La Serena
Tonima Tasnim Ananna, Yale University
Friedrich Anders, Leibniz Institute for Astrophysics Potsdam
Scott F. Anderson, University of Washington, Seattle
Brett H. Andrews, University of Pittsburgh
Borja Anguiano, University of Virginia
Alfonso Aragón-Salamanca, University of Nottingham
Maria Argudo-Fernández, Universidad de Antofagasta
Eric Armengaud, Institut de Recherche sur les Lois Fondamentales de l'Univers
Metin Ata, Leibniz Institute for Astrophysics Potsdam
Eric Aubourg, APC - AstroParticule et Cosmologie
Vladimir Avila-Reese, Universidad Nacional Autónoma de México
Carles Badenes, University of Pittsburgh
Stephen Bailey, Lawrence Berkeley National Laboratory
Christophe Balland, Sorbonne Universite
Kathleen A. Barger, Texas Christian University
Jorge Barrera-Ballesteros, Johns Hopkins University
Curtis Bartosz, University of Washington, Seattle
Fabienne Bastien, Pennsylvania State University
Dominic Bates, University of St Andrews
Falk Baumgarten, Leibniz Institute for Astrophysics Potsdam
Julian Bautista, The University of Utah
Rachael Beaton, Carnegie Observatories
Timothy C. Beers, University of Notre Dame
Francesco Belfiore, Department of Physics
Chad F. Bender, The University of Arizona
Mariangela Bernardi, University of Pennsylvania
Hee-Jong Seo, Ohio University

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atlases, catalogs, surveys


© 2018. The American Astronomical Society.. 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.