The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey : large-scale structure catalogues for cosmological analysis
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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 , Comparat , J , Dawson , K S , de Mattia , A , du Mas des Bourboux , H , Gil-Marín , H , Hou , J , Kong , H , Lyke , B W , Mohammad , F G , Moustakas , J , Mueller , E-M , Myers , A D , Percival , W J , Raichoor , A , Rezaie , M , Seo , H-J , Smith , A , Tinker , J L , Zarrouk , P , Zhao , C , Zhao , G-B , Bizyaev , D , Brinkmann , J , Brownstein , J R , Rosell , A C , Chabanier , S , Choi , P D , Chuang , C-H , Cruz-Gonzalez , I , de la Macorra , A , de la Torre , S , Escoffier , S , Fromenteau , S , Higley , A , Jullo , E , Kneib , J-P , McLane , J N , Muñoz-Gutiérrez , A , Neveux , R , Newman , J A , Nitschelm , C , Palanque-Delabrouille , N , Paviot , R , Pullen , A R , Rossi , G , Ruhlmann-Kleider , V , Schneider , D P , Magaña , M V , Vivek , M & 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 , vol. 498 , no. 2 , pp. 2354-2371 . https://doi.org/10.1093/mnras/staa2416
Monthly Notices of the Royal Astronomical Society
Copyright © 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1093/mnras/staa2416.
DescriptionAJR is grateful for support from the Ohio State University Center for Cosmology and Particle Physics. SA is supported by the European Research Council through the COSFORM Research Grant (#670193). BL and ADM were supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award Number DE-SC0019022. Authors acknowledge support from the ANR eBOSS project (ANR-16-CE31-0021) of the French National Research Agency. GR is supported by the National Research Foundation of Korea (NRF) through Grants No. 2017R1E1A1A01077508 and No. 2020R1A2C1005655 funded by the Korean Ministry of Education, Science and Technology (MoEST), and by the faculty research fund of Sejong University.
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