Dark Energy Survey Year 1 results: measurement of the baryon acoustic oscillation scale in the distribution of galaxies to redshift 1

Author:

Abbott T M C1,Abdalla F B23,Alarcon A4,Allam S5,Andrade-Oliveira F67,Annis J5,Avila S89ORCID,Banerji M1011ORCID,Banik N5121314ORCID,Bechtol K15,Bernstein R A16,Bernstein G M17,Bertin E1819,Brooks D2,Buckley-Geer E5,Burke D L2021,Camacho H622,Carnero Rosell A623ORCID,Carrasco Kind M2425,Carretero J26,Castander F J4,Cawthon R27,Chan K C428ORCID,Crocce M4ORCID,Cunha C E21,D’Andrea C B17,da Costa L N623,Davis C21,De Vicente J29,DePoy D L30,Desai S31,Diehl H T5,Doel P2,Drlica-Wagner A5,Eifler T F3233,Elvin-Poole J34,Estrada J5,Evrard A E3536ORCID,Flaugher B5,Fosalba P4,Frieman J527,García-Bellido J9,Gaztanaga E4,Gerdes D W3536,Giannantonio T101137,Gruen D2021ORCID,Gruendl R A2425,Gschwend J623,Gutierrez G5,Hartley W G238,Hollowood D39,Honscheid K4041,Hoyle B3742ORCID,Jain B17,James D J43,Jeltema T39,Johnson M D24,Kent S527,Kokron N622,Krause E3233,Kuehn K44,Kuhlmann S45,Kuropatkin N5,Lacasa F646,Lahav O2,Lima M622,Lin H5,Maia M A G623,Manera M2,Marriner J5,Marshall J L30,Martini P4147,Melchior P48ORCID,Menanteau F2425,Miller C J3536,Miquel R2649,Mohr J J425051,Neilsen E5,Percival W J8,Plazas A A32,Porredon A4,Romer A K52,Roodman A2021,Rosenfeld R653,Ross A J41ORCID,Rozo E54,Rykoff E S2021,Sako M17,Sanchez E29,Santiago B655,Scarpine V5,Schindler R20,Schubnell M36,Serrano S4,Sevilla-Noarbe I29,Sheldon E56,Smith R C1,Smith M57,Sobreira F658,Suchyta E59ORCID,Swanson M E C24,Tarle G36,Thomas D8ORCID,Troxel M A4041,Tucker D L5,Vikram V45,Walker A R1,Wechsler R H202160,Weller J374251,Yanny B5,Zhang Y5,

Affiliation:

1. Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile

2. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK

3. Department of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown 6140, South Africa

4. Institute of Space Sciences (ICE, CSIC) and Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain

5. Fermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USA

6. Laboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil

7. Instituto de Fisica Teorica, Universidade Estadual Paulista, Sao Paulo, Brazil

8. Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UK

9. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain

10. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK

11. Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK

12. Department of Physics, University of Florida, Gainesville, FL 32611, USA

13. GRAPPA, Institute of Theoretical Physics, University of Amsterdam, Science Park 904, 1090 GL, Amsterdam

14. Lorentz Institute, Leiden University, Niels Bohrweg 2, Leiden, NL-2333 CA, The Netherlands

15. LSST, 933 North Cherry Avenue, Tucson, AZ 85721, USA

16. Observatories of the Carnegie Institution of Washington, 813 Santa Barbara St., Pasadena, CA 91101, USA

17. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA

18. CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014, Paris, France

19. Institut d’Astrophysique de Paris, Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, F-75014, Paris, France

20. SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA

21. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, PO Box 2450, Stanford, CA 94305, USA

22. Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP-05314-970, Brazil

23. Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil

24. National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA

25. Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USA

26. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) Spain

27. Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA

28. School of Physics and Astronomy, Sun Yat-Sen University, Guangzhou 510275, China

29. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain

30. 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

31. Department of Physics, IIT Hyderabad, Kandi, Telangana 502285, India

32. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA

33. Department of Astronomy/Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA

34. Jodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK

35. Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA

36. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA

37. Fakultät für Physik, Universitäts-Sternwarte, Ludwig-Maximilians Universität München, Scheinerstr. 1, D-81679 München, Germany

38. Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, Switzerland

39. Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA

40. Department of Physics, The Ohio State University, Columbus, OH 43210, USA

41. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA

42. Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching, Germany

43. Event Horizon Telescope, Harvard-Smithsonian Center for Astrophysics, MS-42, 60 Garden Street, Cambridge, MA 02138, USA

44. Australian Astronomical Observatory, North Ryde, NSW 2113, Australia

45. Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA

46. Département de Physique Théorique and Center for Astroparticle Physics, Université de Genev́e, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland

47. Department of Astronomy, The Ohio State University, Columbus, OH 43210, USA

48. Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA

49. Institució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, Spain

50. Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, D-81679 Munich, Germany

51. Excellence Cluster Universe, Boltzmannstr. 2, D-85748 Garching, Germany

52. Department of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UK

53. ICTP South American Institute for Fundamental Research Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, Brazil

54. Department of Physics, University of Arizona, Tucson, AZ 85721, USA

55. Instituto de Física, UFRGS, Caixa Postal 15051, Porto Alegre, RS - 91501-970, Brazil

56. Brookhaven National Laboratory, Bldg 510, Upton, NY 11973, USA

57. School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK

58. Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, 13083-859 Campinas, SP, Brazil

59. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

60. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA

Abstract

ABSTRACT We present angular diameter distance measurements obtained by locating the baryon acoustic oscillations (BAO) scale in the distribution of galaxies selected from the first year of Dark Energy Survey data. We consider a sample of over 1.3 million galaxies distributed over a footprint of 1336 deg2 with 0.6 < $z$photo < 1 and a typical redshift uncertainty of 0.03(1 + $z$). This sample was selected, as fully described in a companion paper, using a colour/magnitude selection that optimizes trade-offs between number density and redshift uncertainty. We investigate the BAO signal in the projected clustering using three conventions, the angular separation, the comoving transverse separation, and spherical harmonics. Further, we compare results obtained from template-based and machine-learning photometric redshift determinations. We use 1800 simulations that approximate our sample in order to produce covariance matrices and allow us to validate our distance scale measurement methodology. We measure the angular diameter distance, DA, at the effective redshift of our sample divided by the true physical scale of the BAO feature, rd. We obtain close to a 4 per cent distance measurement of DA($z$eff = 0.81)/rd = 10.75 ± 0.43. These results are consistent with the flat Λ cold dark matter concordance cosmological model supported by numerous other recent experimental results.

Funder

Spanish Ramon y Cajal MICINN program

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Sao Paulo Research Foundation

Instituto Nacional de Ciência e Tecnologia da Criosfera

U.S. Department of Energy

National Science Foundation

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

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