The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: 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

Arnaud De Mattia, Vanina Ruhlmann-Kleider, Anand Raichoor, Ashley J. Ross, Amélie Tamone, Cheng Zhao, Shadab Alam, Santiago Avila, Etienne Burtin, Julian Bautista, Florian Beutler, Jonathan Brinkmann, Joel R. Brownstein, Michael J. Chapman, Chia Hsun Chuang, Johan Comparat, Hélion Du Mas Des Bourboux, Kyle S. Dawson, Axel De La Macorra, Héctor Gil-MarínVioleta Gonzalez-Perez, Claudio Gorgoni, Jiamin Hou, Hui Kong, Sicheng Lin, Seshadri Nadathur, Jeffrey A. Newman, Eva Maria Mueller, Will J. Percival, Mehdi Rezaie, Graziano Rossi, Donald P. Schneider, Prabhakar Tiwari, M. Vivek, Yuting Wang, Gong Bo Zhao

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We analyse the large-scale clustering in Fourier space 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 1170 deg2 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 even multipoles. Photometric variations yield fluctuations of both the angular and radial survey selection functions. Those are directly inferred from data, imposing integral constraints which we model consistently. The full data set has only a weak preference for a BAO feature (1.4σ). At the effective redshift zeff = 0.845 we measure D_{\rm V}(z_{\rm eff})/r_{\rm drag} = 18.33_{-0.62}^{+0.57}, 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 f\sigma _8(z_{\rm eff}) = 0.289_{-0.096}^{+0.085}, with f the growth rate of structure and σ8 the normalization of the linear power spectrum, D_{\rm H}(z_{\rm eff})/r_{\rm drag} = 20.0_{-2.2}^{+2.4} and DM(zeff)/rdrag = 19.17 ± 0.99 with DH and DM the Hubble and comoving angular distances, respectively. These results are in agreement with those obtained in configuration space, thus allowing a consensus measurement of fσ8(zeff) = 0.315 ± 0.095, D_{\rm H}(z_{\rm eff})/r_{\rm drag} = 19.6_{-2.1}^{+2.2} and DM(zeff)/rdrag = 19.5 ± 1.0. This measurement is consistent with a flat ΛCDM model with Planck parameters.

Original languageEnglish (US)
Pages (from-to)5616-5645
Number of pages30
JournalMonthly Notices of the Royal Astronomical Society
Volume501
Issue number4
DOIs
StatePublished - Mar 1 2021

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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