Dark Energy Survey Year 1 results: measurement of the baryon acoustic oscillation scale in the distribution of galaxies to redshift 1
T. M. C. AbbottCerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, ChileF. B. AbdallaDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKA. AlarconInstitut d'Estudis Espacials de CatalunyaS. AllamFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAF. Andrade-OliveiraInstituto de Fisica Teorica, Universidade Estadual Paulista, Sao Paulo, BrazilJ. AnnisFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAS. ÀvilaInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UKM. BanerjiInstitute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UKNilanjan BanikUniversity of AmsterdamK. BechtolLSST, 933 North Cherry Avenue, Tucson, AZ 85721, USAR. A. BernsteinObservatories of the Carnegie Institution of Washington, 813 Santa Barbara St., Pasadena, CA 91101, USAG. M. BernsteinDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAE. BertinInstitut d’Astrophysique de Paris, Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, F-75014, Paris, FranceDavid BrooksDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKE. Buckley‐GeerFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAD. L. BurkeSLAC National Accelerator Laboratory, Menlo Park, CA 94025, USAH. CamachoLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilA. Carnero RosellObservatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilM. Carrasco KindNational Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USAJ. CarreteroInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) SpainF. J. CastanderInstitute of Space Sciences (ICE, CSIC) and Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainR. CawthonKavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USAKwan Chuen ChanInstitut d'Estudis Espacials de CatalunyaM. CrocceInstitute of Space Sciences (ICE, CSIC) and Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainC. E. CunhaKavli Institute for Particle Astrophysics and Cosmology, Stanford University, PO Box 2450, Stanford, CA 94305, USAC. B. D’AndreaDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAL. N. da CostaLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilC. DavisStanford UniversityJ. De VicenteCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, SpainD. L. DePoyGeorge 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, USAS. DesaiDepartment of Physics, IIT Hyderabad, Kandi, Telangana 502285, IndiaH. T. DiehlFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAP. DoelDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKA. Drlica-WagnerFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAT. F. EiflerDepartment of Astronomy/Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USAJ. Elvin-PooleJodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UKJuan EstradaFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAA. E. EvrardDepartment of Astronomy, University of Michigan, Ann Arbor, MI 48109, USAB. FlaugherFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAP. FosalbaInstitute of Space Sciences (ICE, CSIC) and Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainJ. FriemanKavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USAJ. García-BellidoInstituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, SpainE. GaztañagaInstitute of Space Sciences (ICE, CSIC) and Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainD. W. GerdesDepartment of Astronomy, University of Michigan, Ann Arbor, MI 48109, USAT. GiannantonioInstitute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UKD. GruenSLAC National Accelerator Laboratory, Menlo Park, CA 94025, USAR. A. GruendlNational Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USAJ. GschwendObservatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilG. GutiérrezFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAW G HartleyDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKD HollowoodK. HonscheidCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAB. HoyleMax Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching, GermanyBhuvnesh JainDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAD. J. JamesEvent Horizon Telescope, Harvard-Smithsonian Center for Astrophysics, MS-42, 60 Garden Street, Cambridge, MA 02138, USAT. JeltemaM. D. JohnsonNational Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USAS. KentFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USANickolas KokronLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilE. KrauseDepartment of Astronomy/Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USAK. KuehnAustralian Astronomical Observatory, North Ryde, NSW 2113, AustraliaS. KuhlmannArgonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USAN. KuropatkinFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAF. LacasaLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilO. LahavDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKM. LimaDepartamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP-05314-970, BrazilH. LinFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAM. A. G. MaiaLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilMarc ManeraDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKJ. MarrinerFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAJ. L. MarshallGeorge 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, USAPaul MartiniCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAP. MelchiorDepartment of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USAF. MenanteauDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USAC. J. MillerDepartment of Astronomy, University of Michigan, Ann Arbor, MI 48109, USAR. MiquelInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) SpainJ. J. MohrMax Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching, GermanyEric H. NeilsenFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAWill J. PercivalInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UKA A PlazasJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USAA. PorredonInstitute of Space Sciences (ICE, CSIC) and Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainA. K. RomerDepartment of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UKA. RoodmanSLAC National Accelerator Laboratory, Menlo Park, CA 94025, USAR. RosenfeldICTP South American Institute for Fundamental Research Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, BrazilA.J. RossCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAEduardo RozoDepartment of Physics, University of Arizona, Tucson, AZ 85721, USAE. S. RykoffKavli Institute for Particle Astrophysics and Cosmology, Stanford University, PO Box 2450, Stanford, CA 94305, USAM. ŠakoDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAE. SánchezCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, SpainB. X. SantiagoLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilV. ScarpineFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAR. SchindlerSLAC National Accelerator Laboratory, Menlo Park, CA 94025, USAM. SchubnellDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAS. SerranoInstitute of Space Sciences (ICE, CSIC) and Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainI. Sevilla-NoarbeCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, SpainE. SheldonBrookhaven National Laboratory, Bldg 510, Upton, NY 11973, USAR. C. SmithCerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, ChileM. SmithSchool of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UKF. SobreiraLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilE. SuchytaComputer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
2018en
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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.
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