Measuring linear and non-linear galaxy bias using counts-in-cells in the Dark Energy Survey Science Verification data

Journal Article · Wed Oct 17 00:00:00 EDT 2018 · Monthly Notices of the Royal Astronomical Society

DOI:https://doi.org/10.1093/mnras/sty2802· OSTI ID:1480549

Salvador, A. I. ^[1]; Sánchez, F. J.  ^[2]; Pagul, A. ^[3]; García-Bellido, J. ^[1]; Sanchez, E. ^[4]; Pujol, A.  ^[5]; Frieman, J. ^[6]; Gaztanaga, E. ^[7]; Ross, A. J. ^[8]; Sevilla-Noarbe, I. ^[4]; Abbott, T. M. C. ^[9]; Allam, S. ^[10]; Annis, J. ^[10]; Avila, S. ^[11]; Bertin, E. ^[12]; Brooks, D. ^[13]; Burke, D. L. ^[14]; Rosell, A. Carnero ^[15]; Kind, M. Carrasco ^[16]; Carretero, J. ^[17] ; Castander, F. J. ^[7]; Cunha, C. E. ^[18]; De Vicente, J. ^[4]; Diehl, H. T. ^[10]; Doel, P. ^[13]; Evrard, A. E. ^[19]; Fosalba, P. ^[7]; Gruen, D. ^[14]; Gruendl, R. A. ^[16]; Gschwend, J. ^[15]; Gutierrez, G. ^[10]; Hartley, W. G. ^[20]; Hollowood, D. L. ^[21]; James, D. J. ^[22]; Kuehn, K. ^[23]; Kuropatkin, N. ^[10]; Lahav, O. ^[13]; Lima, M. ^[24]; March, M. ^[25]; Marshall, J. L. ^[26]; Menanteau, F. ^[16]; Miquel, R. ^[27]; Romer, A. K. ^[28]; Roodman, A. ^[14]; Scarpine, V. ^[10]; Schindler, R. ^[29]; Smith, M. ^[30]; Soares-Santos, M. ^[31]; Sobreira, F. ^[32]; Suchyta, E. ^[33]; Swanson, M. E. C. ^[34]; Tarle, G. ^[35]; Thomas, D. ^[11]; Vikram, V. ^[36]; Walker, A. R. ^[9]

---

1. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
2. Department of Physics and Astronomy, University of California, Irvine 92602, USA, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
3. Department of Physics and Astronomy, University of California, Riverside 92521, USA, Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA
4. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
5. DEDIP/DAP, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur- Yvette, France, Université Paris Diderot, AIM, Sorbonne Paris Cité, CEA, CNRS, F-91191 Gif-sur-Yvette, France
6. Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA, Fermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USA
7. Institut d’Estudis Espacials de Catalunya (IEEC), E-08193 Barcelona, Spain, Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain
8. Center for Cosmology and AstroParticle Physics, Department of Physics, the Ohio State University, 191 W Woodruff Ave,Columbus, OH 43210, USA
9. Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile
10. Fermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USA
11. Institute of Cosmology & Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UK
12. CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, France, Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, France
13. Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
14. Kavli Institute for Particle Astrophysics & Cosmology, PO Box 2450, Stanford University, Stanford, CA 94305, USA, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
15. Laboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ-20921-400, Brazil, Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ-20921-400, Brazil
16. Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USA, National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA
17. Institut de Física d’Altes Energies (IFAE), the Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona), Spain
18. Kavli Institute for Particle Astrophysics & Cosmology, PO Box 2450, Stanford University, Stanford, CA 94305, USA
19. Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA, Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
20. Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK, Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, Switzerland
21. Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA
22. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
23. Australian Astronomical Observatory, North Ryde, NSW 2113, Australia
24. Laboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ-20921-400, Brazil, Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP 05314-970, Brazil
25. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
26. George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA
27. Institut de Física d’Altes Energies (IFAE), the Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona), Spain, Institució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, Spain
28. Department of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UK
29. SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
30. School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK
31. Physics Department, Brandeis University, 415 South Street, Waltham, MA 02453, USA
32. Laboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ-20921-400, Brazil, Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, 13083-859 Campinas, SP, Brazil
33. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
34. National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA
35. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
36. Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA

Non-linear bias measurements require a great level of control of potential systematic effects in galaxy redshift surveys. Our goal is to demonstrate the viability of using counts-in-cells (CiC), a statistical measure of the galaxy distribution, as a competitive method to determine linear and higher-order galaxy bias and assess clustering systematics. We measure the galaxy bias by comparing the first four moments of the galaxy density distribution with those of the dark matter distribution. We use data from the MICE simulation to evaluate the performance of this method, and subsequently perform measurements on the public Science Verification data from the Dark Energy Survey. We find that the linear bias obtained with CiC is consistent with measurements of the bias performed using galaxy–galaxy clustering, galaxy–galaxy lensing, cosmic microwave background lensing, and shear + clustering measurements. Furthermore, we compute the projected (2D) non-linear bias using the expansion δ_g=Σ$$3\atop{k=0}$$(b_k/k!)δ^k, finding a non-zero value for b₂ at the 3σ level. We also check a non-local bias model and show that the linear bias measurements are robust to the addition of new parameters. We compare our 2D results to the 3D prediction and find compatibility in the large-scale regime (>30 h^-1Mpc).

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
• Contributing Organization: DES Collaboration
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 1480549
• Alternate ID(s): OSTI ID: 1481647
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 482 Journal Issue: 2; ISSN 0035-8711
• Publisher: Royal Astronomical Society
• Country of Publication: United Kingdom
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS