The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: N-body mock challenge for the eBOSS emission line galaxy sample

Journal Article · Fri Apr 23 00:00:00 EDT 2021 · Monthly Notices of the Royal Astronomical Society

DOI:https://doi.org/10.1093/mnras/stab1150· OSTI ID:1783307

Alam, Shadab ^[1]; de Mattia, Arnaud ^[2]; Tamone, Amélie ^[3]; Ávila, S. ^[4]; Peacock, John A. ^[1]; Gonzalez-Perez, V. ^[5]; Smith, Alex ^[2]; Raichoor, Anand ^[3]; Ross, Ashley J. ^[6]; Bautista, Julian E. ^[7]; Burtin, Etienne ^[2]; Comparat, Johan ^[8]; Dawson, Kyle S. ^[9]; du Mas des Bourboux, Hélion ^[9]; Escoffier, Stéphanie ^[10]; Gil-Marín, Héctor ^[11]; Habib, Salman ^[12]; Heitmann, Katrin ^[13]; Hou, Jiamin ^[14]; Mohammad, Faizan G. ^[15] ; Mueller, Eva-Maria ^[16]; Neveux, Richard ^[2]; Paviot, Romain ^[17]; Percival, Will J. ^[18]; Rossi, Graziano ^[19]; Ruhlmann-Kleider, Vanina ^[2]; Tojeiro, Rita ^[20]; Vargas Magaña, Mariana ^[21]; Zhao, Cheng ^[3]; Zhao, Gong-Bo ^[22]

---

1. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
2. IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
3. Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
4. Departamento de Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, E-28049 Cantoblanco, Madrid, Spain, Instituto de Fsica Teorica, UAM-CSIC, Universidad Autonoma de Madrid, E-28049 Cantoblanco, Madrid, Spain
5. Institute of Cosmology and Gravitation, Portsmouth University, Burnaby Road, Portsmouth PO13FX, UK, Astrophysics Research Institute, Liverpool John Moores University, 146 Brownlow Hill, Liverpool L3 5RF, UK
6. Center for Cosmology and AstroParticle Physics, The Ohio State University, Columbus, OH 43210, USA
7. Institute of Cosmology & Gravitation, Dennis Sciama Building, University of Portsmouth, Portsmouth PO1 3FX, UK
8. Max-Planck-Institut für extraterrestrische Physik (MPE), Giessenbachstrasse 1, D-85748 Garching bei München, Germany
9. Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USA
10. Aix Marseille Univ, CNRS/IN2P3, CPPM, 13009 Marseille, France
11. Institut de Ciències del Cosmos, Universitat de Barcelona, ICCUB, Martí i Franquès 1, E-08028 Barcelona, Spain, Institut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, Spain
12. High Energy Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA, Computational Science Division, Argonne National Laboratory, Lemont, IL 60439, USA
13. High Energy Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
14. Max-Planck-Institut für Extraterrestrische Physik, Postfach 1312, Giessenbachstr, D-85748 Garching bei München, Germany
15. Waterloo Centre for Astrophysics, University of Waterloo, Waterloo, ON N2L 3G1, Canada, Department of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada
16. Sub-department of Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
17. Aix Marseille Univ, CNRS/IN2P3, CPPM, 13009 Marseille, France, Aix Marseille Univ, CNRS, CNES, LAM, 13013 Marseille, France
18. Waterloo Centre for Astrophysics, University of Waterloo, Waterloo, ON N2L 3G1, Canada, Department of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada, Perimeter Institute for Theoretical Physics, 31 Caroline St North, Waterloo, ON N2L 2Y5, Canada
19. Department of Physics and Astronomy, Sejong University, Seoul 143-747, Korea
20. School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, UK
21. Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, Ciudad de México, México
22. Institute of Cosmology & Gravitation, Dennis Sciama Building, University of Portsmouth, Portsmouth PO1 3FX, UK, National Astronomy Observatories, Chinese Academy of Science, Beijing 100012, P. R. China, College of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

ABSTRACT

Cosmological growth can be measured in the redshift space clustering of galaxies targeted by spectroscopic surveys. Accurate prediction of clustering of galaxies will require understanding galaxy physics, which is a very hard and highly non-linear problem. Approximate models of redshift space distortion (RSD) take a perturbative approach to solve the evolution of dark matter and galaxies in the universe. In this paper, we focus on extended Baryon Oscillation Spectroscopic (eBOSS) emission line galaxies (ELGs) that live in intermediate mass haloes. We create a series of mock catalogues using haloes from the Multidark and outer rim dark matter only N-body simulations. Our mock catalogues include various effects inspired by baryonic physics such as assembly bias and the characteristics of satellite galaxies kinematics, dynamics, and statistics deviating from dark matter particles. We analyse these mocks using the TNS RSD model in Fourier space and the convolution Lagrangian perturbation theory (CLPT) in configuration space. We conclude that these two RSD models provide an unbiased measurement of RSD within the statistical error of our mocks. We obtain the conservative theoretical systematic uncertainty of $$3.3{{\ \rm per\ cent}}$$, $$1.8{{\ \rm per\ cent}}$$, and $$1.5{{\ \rm per\ cent}}$$ in fσ8, α∥, and α⊥, respectively, for the TNS and CLPT models. We note that the estimated theoretical systematic error is an order of magnitude smaller than the statistical error of the eBOSS ELG sample and hence are negligible for the purpose of the current eBOSS ELG analysis.

• Sponsoring Organization: USDOE
• Grant/Contract Number: W-7405-ENG-36
• OSTI ID: 1783307
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 4 Vol. 504; ISSN 0035-8711
• Publisher: Oxford University Press
• Country of Publication: United Kingdom
• Language: English