Dark Energy Survey year 1 results: galaxy sample for BAO measurement
M. CrocceInstitute of Space Sciences (ICE, CSIC), Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainA.J. RossCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAI. Sevilla-NoarbeCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, SpainE. GaztañagaInstitute of Space Sciences (ICE, CSIC), Institut d'Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainJ. Elvin-PooleJodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UKS. ÀvilaInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UKA. AlarconInstitute of Space Sciences (ICE, CSIC), Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainKwan Chuen ChanInstitute of Space Sciences (ICE, CSIC), Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainNilanjan BanikFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAJ. CarreteroInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) SpainE. SánchezCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, SpainW G HartleyDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKC. SánchezInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) SpainT. GiannantonioInstitute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UKR. RosenfeldICTP South American Institute for Fundamental Research, Instituto de Física Teórica, Universidade Estadual Paulista, 01140-070, São Paulo, BrazilA. I. SalvadorCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, SpainM. Garcia-FernandezCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, SpainJ García-BellidoFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAT. 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, UKS. AllamFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAJ AnnisFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAK. BechtolLSST, 933 North Cherry Avenue, Tucson, AZ 85721, USAA. Benoit-LévyCNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, FranceG. M. BernsteinDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAR. A. BernsteinObservatories of the Carnegie Institution of Washington, 813 Santa Barbara St., Pasadena, CA 91101, USAE. BertinCNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, FranceD BrooksDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKE Buckley-GeerFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAA. Carnero RosellLaboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, BrazilM. Carrasco KindDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USAF. J. CastanderInstitute of Space Sciences (ICE, CSIC), 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, USAC. E. CunhaKavli Institute for Particle Astrophysics, Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USAC B D’AndreaObservatories of the Carnegie Institution of Washington, 813 Santa Barbara St., Pasadena, CA 91101, USAL. N. da CostaLaboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, BrazilC. DavisKavli Institute for Particle Astrophysics, Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USAJ. De VicenteCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, SpainS DesaiDepartment of Physics, IIT Hyderabad, Kandi, Telangana 502285, IndiaH. T. DiehlFermi National Accelerator Laboratory, P. O. 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, P. O. Box 500, Batavia, IL 60510, USAT F EiflerDepartment of Astronomy/Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USAP FosalbaInstitute of Space Sciences (ICE, CSIC), Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainJ FriemanFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAJ García-BellidoFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAD. W. GerdesDepartment of Astronomy, University of Michigan, Ann Arbor, MI 48109, USAD. GruenKavli Institute for Particle Astrophysics, Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USAR A GruendlDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USAJ GschwendLaboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, BrazilG. GutiérrezFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAD HollowoodK HonscheidCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAB JainObservatories of the Carnegie Institution of Washington, 813 Santa Barbara St., Pasadena, CA 91101, USAD J JamesEvent Horizon Telescope, Harvard-Smithsonian Center for Astrophysics, MS-42, 60 Garden Street, Cambridge MA 02138, UKE. 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, P. O. Box 500, Batavia, IL 60510, USAO 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, BrazilM A G MaiaLaboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, BrazilJ. L. MarshallDepartment of Physics and Astronomy, George P. and Cynthia Woods Mitchell Institute for Fundamental 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, 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 MiquelInstitució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, SpainR. C. NicholInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UKWill 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, USAM. SakoObservatories of the Carnegie Institution of Washington, 813 Santa Barbara St., Pasadena, CA 91101, USAV ScarpineFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAR. SchindlerSLAC National Accelerator Laboratory, Menlo Park, CA 94025, USAD ScolnicKavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USAE. SheldonBrookhaven National Laboratory, Bldg 510, Upton, NY 11973, USAM. C. SmithSchool of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UKR C SmithCerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, ChileM. Soares-SantosDepartment of Physics, Brandeis University, Waltham, MA 02453, USAF. SobreiraInstituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas, SP 13083-859, BrazilE. SuchytaComputer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USAM E C SwansonNational Center for Supercomputing Applications, 1205 West Clark St, Urbana, IL 61801, USAG. TarléDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAD. ThomasInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UKD L TuckerFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAV VikramArgonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USAA. R. WalkerCerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, ChileB YannyFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USAY ZhangFermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USA
2018en
ABI
Аннотация
We define and characterize a sample of 1.3 million galaxies extracted from the first year of Dark Energy Survey data, optimized to measure baryon acoustic oscillations (BAO) in the presence of significant redshift uncertainties. The sample is dominated by luminous red galaxies located at redshifts z 0.6. We define the exact selection using colour and magnitude cuts that balance the need of high number densities and small photometric redshift uncertainties, using the corresponding forecasted BAO distance error as a figure-of-merit in the process. The typical photo z uncertainty varies from 2.3 per cent to 3.6 per cent (in units of 1+z) from z = 0.6 to 1, with number densities from 200 to 130 galaxies per deg 2 in tomographic bins of width z = 0.1. Next, we summarize the validation of the photometric redshift estimation. We characterize and mitigate observational systematics including stellar contamination and show that the clustering on large scales is robust in front of those contaminants. We show that the clustering signal in the autocorrelations and cross-correlations is generally consistent with theoretical models, which serve as an additional test of the redshift distributions.
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