The completed SDSS-IV extended baryon oscillation spectroscopic survey: Large-scale structure catalogues for cosmological analysis

Ashley J. Ross, Julian Bautista, Rita Tojeiro, Shadab Alam, Stephen Bailey, Etienne Burtin, Johan Comparat, Kyle S. Dawson, Arnaud De Mattia, Helion Du Mas Des Bourboux, Hector Gil-Maŕin, Jiamin Hou, Hui Kong, Brad W. Lyke, Faizan G. Mohammad, John Moustakas, Eva Maria Mueller, Adam D. Myers, Will J. Percival, Anand RaichoorMehdi Rezaie, Hee Jong Seo, Alex Smith, Jeremy L. Tinker, Pauline Zarrouk, Cheng Zhao, Gong Bo Zhao, Dmitry Bizyaev, Jonathan Brinkmann, Joel R. Brownstein, Carnero Rosell Aurelio Carnero Rosell, Solène Chabanier, Peter D. Choi, Chia Hsun Chuang, Irene Cruz-Gonzalez, Axel De La MacOrra, Sylvain De La Torre, Stephanie Escoffier, Sebastien Fromenteau, Alexandra Higley, Eric Jullo, Jean Paul Kneib, Jacob N. McLane, Andrea Muñoz-Gutíerrez, Richard Neveux, Jeffrey A. Newman, Christian Nitschelm, Nathalie Palanque-Delabrouille, Romain Paviot, Anthony R. Pullen, Graziano Rossi, Vanina Ruhlmann-Kleider, Donald P. Schneider, Mariana Vargas Magaña, M. Vivek, Yucheng Zhang

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70 Scopus citations


We present large-scale structure catalogues from the completed extended Baryon Oscillation Spectroscopic Survey (eBOSS). Derived from Sloan Digital Sky Survey (SDSS) IV Data Release 16 (DR16), these catalogues provide the data samples, corrected for observational systematics, and random positions sampling the survey selection function. Combined, they allow large-scale clustering measurements suitable for testing cosmological models. We describe the methods used to create these catalogues for the eBOSS DR16 Luminous Red Galaxy (LRG) and Quasar samples. The quasar catalogue contains 343 708 redshifts with 0.8 < z < 2.2 over 4808 deg2. We combine 174 816 eBOSS LRG redshifts over 4242 deg2 in the redshift interval 0.6 < z < 1.0 with SDSS-III BOSS LRGs in the same redshift range to produce a combined sample of 377 458 galaxy redshifts distributed over 9493 deg2. Improved algorithms for estimating redshifts allow that 98 per cent of LRG observations result in a successful redshift, with less than one per cent catastrophic failures (-z > 1000 km s-1). For quasars, these rates are 95 and 2 per cent (with-z > 3000 km s-1).We apply corrections for trends between the number densities of our samples and the properties of the imaging and spectroscopic data. For example, the quasar catalogue obtains a x2/DoF = 776/10 for a null test against imaging depth before corrections and a x2/DoF= 6/8 after. The catalogues, combined with careful consideration of the details of their construction found here-in, allow companion papers to present cosmological results with negligible impact from observational systematic uncertainties.

Original languageEnglish (US)
Pages (from-to)2354-2371
Number of pages18
JournalMonthly Notices of the Royal Astronomical Society
Issue number2
StatePublished - 2020

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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