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arxiv: 1703.00052 · v2 · pith:CA7BEPKBnew · submitted 2017-02-28 · 🌌 astro-ph.GA

Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe

Michael R. Blanton , Matthew A. Bershady , Bela Abolfathi , Franco D. Albareti , Carlos Allende Prieto , Andres Almeida , Javier Alonso-Garc\'ia , Friedrich Anders
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Scott F. Anderson Brett Andrews Erik Aquino-Ort\'iz Alfonso Arag\'on-Salamanca Maria Argudo-Fern\'andez Eric Armengaud Eric Aubourg Vladimir Avila-Reese Carles Badenes Stephen Bailey Kathleen A. Barger Jorge Barrera-Ballesteros Curtis Bartosz Dominic Bates Falk Baumgarten Julian Bautista Rachael Beaton Timothy C. Beers Francesco Belfiore Chad F. Bender Andreas A. Berlind Mariangela Bernardi Florian Beutler Jonathan C. Bird Dmitry Bizyaev Guillermo A. Blanc Michael Blomqvist Adam S. Bolton M\'ed\'eric Boquien Jura Borissova Remco van den Bosch Jo Bovy William N. Brandt Jonathan Brinkmann Joel R. Brownstein Kevin Bundy Adam J. Burgasser Etienne Burtin Nicol\'as G. Busca Michele Cappellari Maria Leticia Delgado Carigi Joleen K. Carlberg Aurelio Carnero Rosell Ricardo Carrera Brian Cherinka Edmond Cheung Yilen G\'omez Maqueo Chew Cristina Chiappini Peter Doohyun Choi Drew Chojnowski Chia-Hsun Chuang Haeun Chung Rafael Fernando Cirolini Nicolas Clerc Roger E. Cohen Johan Comparat Luiz da Costa Marie-Claude Cousinou Kevin Covey Jeffrey D. Crane Rupert A.C. Croft Irene Cruz-Gonzalez Daniel Garrido Cuadra Katia Cunha Guillermo J. Damke Jeremy Darling Roger Davies Kyle Dawson Axel de la Macorra Nathan De Lee Timoth\'ee Delubac Francesco di Mille Aleks Diamond-Stanic Mariana Cano-D\'iaz John Donor Juan Jos\'e Downes Niv Drory H\'elion du Mas des Bourboux Christopher J. Duckworth Tom Dwelly Jamie Dyer Garrett Ebelke Daniel J. Eisenstein Eric Emsellem Mike Eracleous Stephanie Escoffier Michael L. Evans Xiaohui Fan Emma Fern\'andez-Alvar J. G. Fernandez-Trincado Diane K. Feuillet Alexis Finoguenov Scott W. Fleming Andreu Font-Ribera Alexander Fredrickson Gordon Freischlad Peter M. Frinchaboy Llu\'is Galbany R. Garcia-Dias D. A. Garc\'ia-Hern\'andez Patrick Gaulme Doug Geisler Joseph D. Gelfand H\'ector Gil-Mar\'in Bruce A. Gillespie Daniel Goddard Violeta Gonzalez-Perez Kathleen Grabowski Paul J. Green Catherine J. Grier James E. Gunn Hong Guo Julien Guy Alex Hagen ChangHoon Hahn Matthew Hall Paul Harding Sten Hasselquist Suzanne L. Hawley Fred Hearty Jonay I. Gonzalez Hern\'andez Shirley Ho David W. Hogg Kelly Holley-Bockelmann Jon A. Holtzman Parker H. Holzer Joseph Huehnerhoff Timothy A. Hutchinson Ho Seong Hwang H\'ector J. Ibarra-Medel Gabriele da Silva Ilha Inese I. Ivans KeShawn Ivory Kelly Jackson Trey W. Jensen Jennifer A. Johnson Amy Jones Henrik J\"onsson Eric Jullo Vikrant Kamble Karen Kinemuchi David Kirkby Francisco-Shu Kitaura Mark Klaene Gillian R. Knapp Jean-Paul Kneib Juna A. Kollmeier Ivan Lacerna Richard R. Lane Dustin Lang David R. Law Daniel Lazarz Jean-Marc Le Goff Fu-Heng Liang Cheng Li Hongyu Li Marcos Lima Lihwai Lin Yen-Ting Lin Sara Bertran de Lis Chao Liu Miguel Angel C. de Icaza Lizaola Dan Long Sara Lucatello Britt Lundgren Nicholas K. MacDonald Alice Deconto Machado Chelsea L. MacLeod Suvrath Mahadevan Marcio Antonio Geimba Maia Roberto Maiolino Steven R. Majewski Elena Malanushenko Viktor Malanushenko Arturo Manchado Shude Mao Claudia Maraston Rui Marques-Chaves Karen L. Masters Cameron K. McBride Richard M. McDermid Brianne McGrath Ian D. McGreer Nicol\'as Medina Pe\~na Matthew Melendez Andrea Merloni Michael R. Merrifield Szabolcs Meszaros Andres Meza Ivan Minchev Dante Minniti Takamitsu Miyaji Surhud More John Mulchaey Francisco M\"uller-S\'anchez Demitri Muna Ricardo R. Munoz Adam D. Myers Preethi Nair Kirpal Nandra Janaina Correa do Nascimento Alenka Negrete Melissa Ness Jeffrey A. Newman Robert C. Nichol David L. Nidever Christian Nitschelm Pierros Ntelis Julia E. O'Connell Ryan J. Oelkers Audrey Oravetz Daniel Oravetz Zach Pace Nelson Padilla Nathalie Palanque-Delabrouille Pedro Alonso Palicio Kaike Pan Taniya Parikh Isabelle P\^aris Changbom Park Alim Y. Patten Sebastien Peirani Marcos Pellejero-Ibanez Samantha Penny Will J. Percival Ismael Perez-Fournon Patrick Petitjean Matthew M. Pieri Marc Pinsonneault Alice Pisani Rados{\l}aw Poleski Francisco Prada Abhishek Prakash Anna B\'arbara de Andrade Queiroz M. Jordan Raddick Anand Raichoor Sandro Barboza Rembold Hannah Richstein Rogemar A. Riffel Rog\'erio Riffel Hans-Walter Rix Annie C. Robin Constance M. Rockosi Sergio Rodr\'iguez-Torres A. Roman-Lopes Carlos Rom\'an-Z\'u\~niga Margarita Rosado Ashley J. Ross Graziano Rossi John Ruan Rossana Ruggeri Eli S. Rykoff Salvador Salazar-Albornoz Mara Salvato Ariel G. S\'anchez David S\'anchez Aguado Jos\'e R. S\'anchez-Gallego Felipe A. Santana Bas\'ilio Xavier Santiago Conor Sayres Ricardo P. Schiavon Jaderson da Silva Schimoia Edward F. Schlafly David J. Schlegel Donald P. Schneider Mathias Schultheis William J. Schuster Axel Schwope Hee-Jong Seo Zhengyi Shao Shiyin Shen Matthew Shetrone Michael Shull Joshua D. Simon Danielle Skinner M. F. Skrutskie An\v{z}e Slosar Verne V. Smith Jennifer S. Sobeck Flavia Sobreira Garrett Somers Diogo Souto David V. Stark Keivan Stassun Fritz Stauffer Matthias Steinmetz Thaisa Storchi-Bergmann Alina Streblyanska Guy S. Stringfellow Genaro Su\'arez Jing Sun Nao Suzuki Laszlo Szigeti Manuchehr Taghizadeh-Popp Baitian Tang Charling Tao Jamie Tayar Mita Tembe Johanna Teske Aniruddha R. Thakar Daniel Thomas Benjamin A. Thompson Jeremy L. Tinker Patricia Tissera Rita Tojeiro Hector Hernandez Toledo Sylvain de la Torre Christy Tremonti Nicholas W. Troup Octavio Valenzuela Inma Martinez Valpuesta Jaime Vargas-Gonz\'alez Mariana Vargas-Maga\~na Jose Alberto Vazquez Sandro Villanova M. Vivek Nicole Vogt David Wake Rene Walterbos Yuting Wang Benjamin Alan Weaver Anne-Marie Weijmans David H. Weinberg Kyle B. Westfall David G. Whelan Vivienne Wild John Wilson W. M. Wood-Vasey Dominika Wylezalek Ting Xiao Renbin Yan Meng Yang Jason E. Ybarra Christophe Y\`eche Nadia Zakamska Olga Zamora Pauline Zarrouk Gail Zasowski Kai Zhang Gong-Bo Zhao Zheng Zheng Zhi-Min Zhou Guangtun B. Zhu Manuela Zoccali Hu Zou
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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 of Milky Way stars at high resolution and high signal-to-noise ratio in the near-infrared. The Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey is obtaining spatially-resolved spectroscopy for thousands of nearby galaxies (median redshift of z = 0.03). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between redshifts z = 0.6 and 3.5 to constrain cosmology using baryon acoustic oscillations, redshift space distortions, and the shape of the power spectrum. Within eBOSS, we are conducting two major subprograms: the SPectroscopic IDentification of eROSITA Sources (SPIDERS), investigating X-ray AGN and galaxies in X-ray clusters, and the Time Domain Spectroscopic Survey (TDSS), obtaining spectra of variable sources. All programs use the 2.5-meter Sloan Foundation Telescope at Apache Point Observatory; observations there began in Summer 2014. APOGEE-2 also operates a second near-infrared spectrograph at the 2.5-meter du Pont Telescope at Las Campanas Observatory, with observations beginning in early 2017. Observations at both facilities are scheduled to continue through 2020. In keeping with previous SDSS policy, SDSS-IV provides regularly scheduled public data releases; the first one, Data Release 13, was made available in July 2016.

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