The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample

Creators: Bautista, Julian E.; Vargas-Magaña, Mariana; Dawson, Kyle S.; Percival, Will J.; Brinkmann, Jonathan; Brownstein, Joel; Camacho, Benjamin; Comparat, Johan; Gil-Marín, Héctor; Mueller, Eva-Maria; Newman, Jeffrey A.; Prakash, Abhishek; Ross, Ashley J.; Schneider, Donald P.; Seo, Hee-Jong; Tinker, Jeremy; Tojeiro, Rita; Zhai, Zhongxu; Zhao, Gong-Bo

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Abstract

The extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 sample includes 80,118 luminous red galaxies (LRGs). By combining these galaxies with the high-redshift tail of the BOSS galaxy sample, we form a sample of LRGs at an effective redshift z = 0.72, covering an effective volume of 0.9 Gpc^3. We account for spurious fluctuations caused by targeting and by redshift failures, which were validated on a set of mock catalogs. This analysis is sufficient to provide a 2.5% measurement of spherically averaged baryon acoustic oscillations (BAO), D_v(z = 0.72) = 2377^(+61)_(-59)(r_d/r_(d,fid)) Mpc, at 2.8σ of significance. Together with the recent quasar-based BAO measurement at z = 1.5 and forthcoming emission line galaxy–based measurements, this measurement demonstrates that eBOSS is fulfilling its remit of extending the range of redshifts covered by such measurements, laying the groundwork for forthcoming surveys such as the Dark Energy Spectroscopic Survey and Euclid.

Additional Information

© 2018 The American Astronomical Society. Received 2017 December 19; revised 2018 June 17; accepted 2018 June 20; published 2018 August 14. This paper represents an effort by both the SDSS-III and SDSS-IV collaborations. Funding for SDSS-III was provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the U.S. Department of Energy Office of Science. 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. The SDSS website is www.sdss.org. SDSS-IV is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS Collaboration including the Brazilian Participation Group, the Carnegie Institution for Science, Carnegie Mellon University, the Chilean Participation Group, the French Participation Group, Harvard-Smithsonian Center for Astrophysics, Instituto de Astrofísica de Canarias, The Johns Hopkins University, Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo, Lawrence Berkeley National Laboratory, Leibniz Institut für Astrophysik Potsdam (AIP), Max-Planck-Institut für Astronomie (MPIA Heidelberg), Max-Planck-Institut für Astrophysik (MPA Garching), Max-Planck-Institut für Extraterrestrische Physik (MPE), National Astronomical Observatory of China, New Mexico State University, New York University, University of Notre Dame, Observatário Nacional/MCTI, The Ohio State University, Pennsylvania State University, Shanghai Astronomical Observatory, United Kingdom Participation Group, Universidad Nacional Autónoma de México, University of Arizona, University of Colorado Boulder, University of Portsmouth, University of Utah, University of Virginia, University of Washington, University of Wisconsin, Vanderbilt University, and Yale University. This paper includes targets derived from the images of the Wide-Field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. The support and resources from the Center for High-Performance Computing at the University of Utah are gratefully acknowledged. The work of J.B. and K.D. was supported in part by U.S. Department of Energy, Office of Science, Office of High Energy Physics, under award DE-SC0009959. M.V. is partially supported by Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica (PAPITT) no. IA102516, Proyecto Conacyt Fronteras no. 281, and from Proyecto LANCAD-UNAM-DGTIC-319. W.J.P. and E.-M.M. acknowledge support from the UK Science and Technology Facilities Council grant ST/N000668/1. W.J.P. also acknowledges support from the European Research Council through the Darksurvey grant 614030 and the UK Space Agency grant ST/N00180X/1. G.B.Z. is supported by NSFC grants 1171001024 and 11673025. G.B.Z. is also supported by a Royal Society Newton Advanced Fellowship, hosted by University of Portsmouth.

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