Skip to main content

Research Repository

Advanced Search

The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale structure catalogues for cosmological analysis

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

The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale structure catalogues for cosmological analysis Thumbnail


Ashley J. Ross

Julian Bautista

Rita Tojeiro

Shadab Alam

Stephen Bailey

Etienne Burtin

Johan Comparat

Kyle S Dawson

Arnaud de Mattia

Hélion du Mas des Bourboux

Héctor Gil-Marín

Jiamin Hou

Hui Kong

Brad W Lyke

Faizan G. Mohammad

John Moustakas

Eva-Maria Mueller

Adam D. Myers

Will J. Percival

Anand Raichoor

Mehdi Rezaie

Hee-Jong Seo

Alex Smith

Jeremy L. Tinker

Cheng Zhao

Gong-Bo Zhao

Dmitry Bizyaev

Jonathan Brinkmann

Joel R Brownstein

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-Gutiérrez

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


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 (Δz > 1000 km s−1). For quasars, these rates are 95 and 2 per cent (with Δz > 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 χ2/DoF = 776/10 for a null test against imaging depth before corrections and a χ2/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.


Ross, A. J., Bautista, J., Tojeiro, R., Alam, S., Bailey, S., Burtin, E., …Zhang, Y. (2020). The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale structure catalogues for cosmological analysis. Monthly Notices of the Royal Astronomical Society, 498(2), 2354-2371.

Journal Article Type Article
Acceptance Date Aug 11, 2020
Online Publication Date Sep 2, 2020
Publication Date 2020-10
Deposit Date Nov 18, 2020
Publicly Available Date Nov 18, 2020
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 498
Issue 2
Pages 2354-2371


Published Journal Article (3.4 Mb)

Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. ©: 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

You might also like

Downloadable Citations