TY - JOUR
T1 - The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey
T2 - measurement of the BAO and growth rate of structure of the emission line galaxy sample from the anisotropic power spectrum between redshift 0.6 and 1.1
AU - Mattia, Arnaud de
AU - Ruhlmann-Kleider, Vanina
AU - Raichoor, Anand
AU - Ross, Ashley J.
AU - Tamone, Amélie
AU - Zhao, Cheng
AU - Alam, Shadab
AU - Avila, Santiago
AU - Burtin, Etienne
AU - Bautista, Julian
AU - Beutler, Florian
AU - Brinkmann, Jonathan
AU - Brownstein, Joel R.
AU - Chapman, Michael J.
AU - Chuang, Chia-Hsun
AU - Comparat, Johan
AU - Bourboux, Hélion du Mas des
AU - Dawson, Kyle S.
AU - Macorra, Axel de la
AU - Gil-Marín, Héctor
AU - Gonzalez-Perez, Violeta
AU - Gorgoni, Claudio
AU - Hou, Jiamin
AU - Kong, Hui
AU - Lin, Sicheng
AU - Nadathur, Seshadri
AU - Newman, Jeffrey A.
AU - Mueller, Eva-Maria
AU - Percival, Will J.
AU - Rezaie, Mehdi
AU - Rossi, Graziano
AU - Schneider, Donald P.
AU - Tiwari, Prabhakar
AU - Vivek, M.
AU - Wang, Yuting
AU - Zhao, Gong-Bo
N1 - 29 pages, 17 figures. A summary of all SDSS BAO and RSD measurements with accompanying legacy figures can be found here: https://sdss.org/science/final-bao-and-rsd-measurements. The full cosmological interpretation of these measurements can be found here: https://sdss.org/science/cosmology-results-from-eboss. Typo in consensus measurement corrected.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - We present the large-scale clustering of emission line galaxies (ELG) from the Data Release 16 of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey. The ELG sample contains 173,736 galaxies covering 1,170 square degrees in the redshift range 0.6 < z < 1.1. We perform a BAO measurement from the post-reconstruction power spectrum monopole, and study redshift space distortions (RSD) in the first three multipoles. Purely angular photometric systematics are mitigated by nulling angular signal in pixels of appropriate size. Variations of the redshift distribution with photometric conditions are accounted for by splitting and measuring the radial selection function of the survey in regions of homogeneous imaging. Both techniques result in integral constraints which we model consistently. At the effective redshift zeff = 0.845 we measure DV(zeff)/rdrag = 18.33 +0.57−0.62, with DV the volume averaged distance and rdrag the comoving sound horizon at the drag epoch. In combination with the RSD measurement, at zeff = 0.85 we find ƒσ8(zeff) = 0.289 +0.085−0.096, with ƒ the growth rate of structure and σ8 the normalisation of the linear power spectrum, DH(zeff)/rdrag = 20.0 +2.4−2.2 and DM(zeff)/rdrag = 19.17 ±0.99 with DH and DM the Hubble and comoving angular distances, respectively. Quoted errors include statistical and systematic contributions. We find good agreement with the results obtained in configuration space, thus allowing a consensus measurement of ƒσ8(zeff) = 0.315 ±0.095, DH(zeff)/rdrag = 19.6 +2.2−2.1 and DM(zeff)/rdrag = 19.5 ±1.0. This measurement is in agreement with a flat ΛCDM model with Planck parameters.
AB - We present the large-scale clustering of emission line galaxies (ELG) from the Data Release 16 of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey. The ELG sample contains 173,736 galaxies covering 1,170 square degrees in the redshift range 0.6 < z < 1.1. We perform a BAO measurement from the post-reconstruction power spectrum monopole, and study redshift space distortions (RSD) in the first three multipoles. Purely angular photometric systematics are mitigated by nulling angular signal in pixels of appropriate size. Variations of the redshift distribution with photometric conditions are accounted for by splitting and measuring the radial selection function of the survey in regions of homogeneous imaging. Both techniques result in integral constraints which we model consistently. At the effective redshift zeff = 0.845 we measure DV(zeff)/rdrag = 18.33 +0.57−0.62, with DV the volume averaged distance and rdrag the comoving sound horizon at the drag epoch. In combination with the RSD measurement, at zeff = 0.85 we find ƒσ8(zeff) = 0.289 +0.085−0.096, with ƒ the growth rate of structure and σ8 the normalisation of the linear power spectrum, DH(zeff)/rdrag = 20.0 +2.4−2.2 and DM(zeff)/rdrag = 19.17 ±0.99 with DH and DM the Hubble and comoving angular distances, respectively. Quoted errors include statistical and systematic contributions. We find good agreement with the results obtained in configuration space, thus allowing a consensus measurement of ƒσ8(zeff) = 0.315 ±0.095, DH(zeff)/rdrag = 19.6 +2.2−2.1 and DM(zeff)/rdrag = 19.5 ±1.0. This measurement is in agreement with a flat ΛCDM model with Planck parameters.
KW - astro-ph.CO
U2 - 10.1093/mnras/staa3891
DO - 10.1093/mnras/staa3891
M3 - Article
SN - 0035-8711
VL - 501
SP - 5616
EP - 5645
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -