Dark Energy Survey Year 1 results: constraints on intrinsic alignments and their colour dependence from galaxy clustering and weak lensing

Journal Article · Fri Aug 16 00:00:00 EDT 2019 · Monthly Notices of the Royal Astronomical Society

DOI:https://doi.org/10.1093/mnras/stz2197· OSTI ID:1567884

Samuroff, S.  ^[1]; Blazek, J. ^[2]; Troxel, M. A. ^[3]; MacCrann, N. ^[3]; Krause, E. ^[4]; Leonard, C. D. ^[1]; Prat, J.  ^[5]; Gruen, D.  ^[6]; Dodelson, S. ^[1]; Eifler, T. F. ^[7]; Gatti, M. ^[5]; Hartley, W. G. ^[8]; Hoyle, B.  ^[9]; Larsen, P.  ^[10]; Zuntz, J.  ^[11]; Abbott, T. M. C. ^[12]; Allam, S. ^[13]; Annis, J. ^[13]; Bernstein, G. M. ^[14]; Bertin, E. ^[15] ; Bridle, S. L. ^[16]; Brooks, D. ^[17]; Carnero Rosell, A.  ^[18]; Carrasco Kind, M. ^[19]; Carretero, J. ^[5]; Castander, F. J. ^[20]; Cunha, C. E. ^[21]; da Costa, L. N. ^[22]; Davis, C. ^[21]; De Vicente, J. ^[23]; DePoy, D. L. ^[24]; Desai, S. ^[25]; Diehl, H. T. ^[14]; Dietrich, J. P. ^[26]; Doel, P. ^[17]; Flaugher, B. ^[13]; Fosalba, P. ^[20]; Frieman, J. ^[27]; García-Bellido, J. ^[28]; Gaztanaga, E. ^[20]; Gerdes, D. W. ^[29]; Gruendl, R. A. ^[19]; Gschwend, J. ^[22]; Gutierrez, G. ^[13]; Hollowood, D. L. ^[30]; Honscheid, K. ^[3]; James, D. J. ^[31]; Kuehn, K. ^[32]; Kuropatkin, N. ^[13]; Lima, M. ^[33]; Maia, M. A. G. ^[22]; March, M.  ^[34]; Marshall, J. L. ^[24]; Martini, P. ^[35]; Melchior, P.  ^[36]; Menanteau, F. ^[19]; Miller, C. J. ^[29]; Miquel, R. ^[37]; Ogando, R. L. C. ^[22]; Plazas, A. A. ^[36]; Sanchez, E. ^[23]; Scarpine, V. ^[13]; Schindler, R. ^[38]; Schubnell, M. ^[39]; Serrano, S. ^[20]; Sevilla-Noarbe, I. ^[23]; Sheldon, E. ^[40]; Smith, M. ^[41]; Sobreira, F. ^[42]; Suchyta, E. ^[43]; Tarle, G. ^[39]; Thomas, D.  ^[44]; Vikram, V. ^[10]

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1. McWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA
2. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA, Laboratory of Astrophysics, é Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
3. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA, Department of Physics, The Ohio State University, Columbus, OH 43210, USA
4. Department of Astronomy/Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA
5. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona), Spain
6. Kavli Institute for Particle Astrophysics & Cosmology, PO Box 2450, Stanford University, Stanford, CA 94305, USA, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
7. Department of Astronomy/Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
8. 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
9. Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching, Germany, Universitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstr 1, D-81679 München, Germany
10. Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA
11. Scottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Edinburgh EH9 3HJ, UK
12. Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile
13. Fermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USA
14. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
15. 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
16. Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK
17. Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
18. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), 28040 Madrid, Spain, Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil
19. 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
20. Institut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, Spain, Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain
21. Kavli Institute for Particle Astrophysics & Cosmology, PO Box 2450, Stanford University, Stanford, CA 94305, USA
22. 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
23. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), 28040 Madrid, Spain
24. 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
25. Department of Physics, IIT Hyderabad, Kandi, Telangana 502285, India
26. Excellence Cluster Universe, Boltzmannstr 2, D-85748 Garching, Germany, Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr 1, D-81679 Munich, Germany
27. Fermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USA, Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA
28. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
29. Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA, Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
30. Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA
31. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
32. Australian Astronomical Optics, Macquarie University, North Ryde, NSW 2113, Australia
33. 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
34. CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, France
35. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA, Department of Astronomy, The Ohio State University, Columbus, OH 43210, USA
36. Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA
37. 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
38. SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
39. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
40. Brookhaven National Laboratory, Bldg 510, Upton, NY 11973, USA
41. School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK
42. 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
43. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
44. Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UK

We perform a joint analysis of intrinsic alignments and cosmology using tomographic weak lensing, galaxy clustering and galaxy-galaxy lensing measurements from Year 1 (Y1) of the Dark Energy Survey. We determine early- and late-type subsamples, which are found to pass a series of systematics tests, including for spurious photometric redshift error and point spread function correlations. We assess these split data alongside the fiducial mixed Y1 sample using a range of intrinsic alignment models. In a fiducial Nonlinear Alignment Model (NLA) analysis, assuming a flat ΛCDM cosmology, we find a significant difference in intrinsic alignment amplitude, with early-type galaxies favouring $$A_\mathrm{IA} = 2.38^{+0.32}_{-0.31}$$ and late-type galaxies consistent with no intrinsic alignments at $$0.05^{+0.10}_{-0.09}$$. The analysis is repeated using a number of extended model spaces, including a physically motivated model that includes both tidal torquing and tidal alignment mechanisms. In multiprobe likelihood chains in which cosmology, intrinsic alignments in both galaxy samples and all other relevant systematics are varied simultaneously, we find the tidal alignment and tidal torquing parts of the intrinsic alignment signal have amplitudes $$A_1 = 2.66 ^{+0.67}_{-0.66}$$, $$A_2=-2.94^{+1.94}_{-1.83}$$, respectively, for early-type galaxies and $$A_1 = 0.62 ^{+0.41}_{-0.41}$$, $$A_2 = -2.26^{+1.30}_{-1.16}$$ for late-type galaxies. In the full (mixed) Y1 sample the best constraints are $$A_1 = 0.70 ^{+0.41}_{-0.38}$$, $$A_2 = -1.36 ^{+1.08}_{-1.41}$$. For all galaxy splits and IA models considered, we observe cosmological parameter constraints consistent with the results of the main DES Y1 cosmic shear and multiprobe cosmology papers

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Michigan, Ann Arbor, MI (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
• Contributing Organization: DES Collaboration
• Grant/Contract Number: AC02-07CH11359; AC05-00OR22725; SC0019193; SC0012704
• OSTI ID: 1567884
• Alternate ID(s): OSTI ID: 1488589; OSTI ID: 1560424; OSTI ID: 1574110; OSTI ID: 1685046
• Report Number(s): arXiv:1811.06989; FERMILAB-PUB-18-622-AE; BNL-212326-2019-JAAM
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 489 Journal Issue: 4; ISSN 0035-8711
• Publisher: Royal Astronomical Society
• Country of Publication: United Kingdom
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmological parameters
cosmology: observations
gravitational lensing: weak
galaxies: statistics
cosmology
observations
gravitational lensing
weak
galaxies
statistics