The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra

Abstract

Abstract This paper documents the 16th data release (DR16) from the Sloan Digital Sky Surveys (SDSS), the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of data from the Southern Hemisphere survey of the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2); new data from APOGEE-2 North are also included. DR16 is also notable as the final data release for the main cosmological program of the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), and all raw and reduced spectra from that project are released here. DR16 also includes all the data from the Time Domain Spectroscopic Survey and new data from the SPectroscopic IDentification of ERosita Survey programs, both of which were co-observed on eBOSS plates. DR16 has no new data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey (or the MaNGA Stellar Library “MaStar”). We also preview future SDSS-V operations (due to start in 2020), and summarize plans for the final SDSS-IV data release (DR17).

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Affiliated Institutions

• University of Wisconsin–Madison US
• Haverford College US
• University of Utah US
• Institut National de Physique Nucléaire et de Physique des Particules FR
• University of Virginia US
• Sorbonne Université FR
• Space Telescope Science Institute US
• Yale University US
• Aix-Marseille Université FR
• Carnegie Observatories US
• National Observatory BR
• Laboratoire de Physique Nucléaire et de Hautes Énergies FR
• University of Toronto CA
• Excellence Cluster Universe DE
• Bates College US
• Universidad de La Laguna ES
• Universidad Nacional Autónoma de México MX
• University of Pennsylvania US
• Ludwig-Maximilians-Universität München DE
• Universidade Federal de Santa Maria BR
• CEA Paris-Saclay FR
• Universidad Autónoma de Madrid ES
• The University of Texas at Austin US
• California State University, Chico US
• Centre National de la Recherche Scientifique FR
• Laboratory for Atmospheric and Space Physics US
• Sejong University KR
• Valongo Observatory BR
• Chinese Academy of Sciences CN
• University of Arizona US
• University of Iowa US
• Canadian Institute for Theoretical Astrophysics CA
• Pennsylvania State University US
• Northern Kentucky University US
• University of St Andrews GB
• Korea Institute for Advanced Study KR
• Institut de Recherche en Astrophysique et Planétologie FR
• New Mexico State University US
• Osservatorio Astronomico di Padova IT
• University of Helsinki FI
• Universitat de Barcelona ES
• Université Paris-Saclay FR
• Trieste Astronomical Observatory IT
• Max Planck Institute for Astronomy DE
• Leibniz Institute for Astrophysics Potsdam DE
• Commissariat à l'Énergie Atomique et aux Énergies Alternatives FR
• Université Toulouse III - Paul Sabatier FR
• University of Atacama CL
• Carnegie Institution for Science US
• Texas Christian University US
• Williams College US
• University of Oxford GB
• Lund University SE
• Millennium Institute of Astrophysics CL
• University of Nottingham GB
• Universidad Autónoma del Estado de Morelos MX
• Observatoire des Sciences de l’Univers Terre Homme Environnement Temps Astronomie FR
• Instituto de Astrofísica de Canarias ES
• Western Washington University US
• University of Pittsburgh US
• University of California, Santa Cruz US
• University of Valparaíso CL
• University of Waterloo CA
• National Astronomical Observatories CN
• Fort Worth Library US
• 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
• Universidad Católica del Norte CL
• University of Washington US
• Max Planck Institute for Extraterrestrial Physics DE
• University of Portsmouth GB
• South African Radio Astronomy Observatory ZA
• 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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