Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum

H. Camacho; N. Kokron; F. Andrade-Oliveira; R. Rosenfeld; M. Lima; F. Lacasa; F. Sobreira; L. N. Da Costa; S. Avila; K. C. Chan; M. Crocce; A. J. Ross; A. Troja; J. Garcia-Bellido; T. M. C. Abbott; F. B. Abdalla; S. Allam; J. Annis; R. A. Bernstein; E. Bertin; S. L. Bridle; D. Brooks; E. Buckley-Geer; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; F. J. Castander; R. Cawthon; C. E. Cunha; C. B. D'Andrea; J. De Vicente; S. Desai; H. T. Diehl; P. Doel; J. Estrada; A. E. Evrard; B. Flaugher; P. Fosalba; J. Frieman; D. W. Gerdes; T. Giannantonio; R. A. Gruendl; J. Gschwend; G. Gutierrez; D. L. Hollowood; K. Honscheid; B. Hoyle; D. J. James; M. W. G. Johnson; M. D. Johnson; S. Kent; D. Kirk; E. Krause; K. Kuehn; N. Kuropatkin; H. Lin; J. L. Marshall; R. Miquel; W. J. Percival; A. A. Plazas; A. K. Romer; A. Roodman; E. Sanchez; M. Schubnell; I. Sevilla-Noarbe; M. Smith; R. C. Smith; M. Soares-Santos; E. Suchyta; M. E. C. Swanson; G. Tarle; D. Thomas; D. L. Tucker; A. R. Walker; J. Zuntz; DES Collaboration

doi:10.1093/mnras/stz1514

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Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum

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Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum

H. Camacho, N. Kokron, F. Andrade-Oliveira, R. Rosenfeld, M. Lima, F. Lacasa, F. Sobreira, L. N. Da Costa, S. Avila, K. C. Chan, …

Monthly notices of the Royal Astronomical Society, Vol.487(3), pp.3870-3883

08/11/2019

DOI: https://doi.org/10.1093/mnras/stz1514

Abstract

Astronomy & Astrophysics

Science & Technology

Physical Sciences

We use data from the first-year observations of the DES collaboration to measure the galaxy angular power spectrum (APS), and search for its BAO feature. We test our methodology in a sample of 1800 DES Y1-like mock catalogues. We use the pseudo-C-l, method to estimate the APS and the mock catalogues to estimate its covariance matrix. We use templates to model the measured spectra and estimate template parameters firstly from the G's of the mocks using two different methods, a maximum likelihood estimator and a Markov Chain Monte Carlo, finding consistent results with a good reduced chi(2). Robustness tests are performed to estimate the impact of different choices of settings used in our analysis. Finally, we apply our method to a galaxy sample constructed from DES Y1 data specifically for LSS studies. This catalogue comprises galaxies within an effective area of 1318 deg(2) and 0.6 < z < 1.0. We find that the DES Y1 data favour a model with BAO at the 2.6 sigma C.L. However, the goodness of fit is somewhat poor, with chi(2)/(d.o.f.) = 1.49. We identify a possible cause showing that using a theoretical covariance matrix obtained from C-l's that are better adjusted to data results in an improved value of chi(2)/(dof) = 1.36 which is similar to the value obtained with the real-space analysis. Our results correspond to a distance measurement of D-A (Z(eff) = 0.81)/r(d) = 10.65 +/- 0.49, consistent with the main DES BAO findings. This is a companion paper to the main DES BAO article showing the details of the harmonic space analysis.

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Title: Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum
Creators: H. Camacho - Laboratório Interinstitucional de e-Astronomia
N. Kokron - Laboratório Interinstitucional de e-Astronomia
F. Andrade-Oliveira - Laboratório Interinstitucional de e-Astronomia
R. Rosenfeld - Laboratório Interinstitucional de e-Astronomia
M. Lima - Laboratório Interinstitucional de e-Astronomia
F. Lacasa - Laboratório Interinstitucional de e-Astronomia
F. Sobreira - Universidade Estadual de Campinas (UNICAMP)
L. N. Da Costa - Lab Interinst E Astron LIneA, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ, Brazil
S. Avila - University of Portsmouth
K. C. Chan - Institut d'Estudis Espacials de Catalunya
M. Crocce - Institut d'Estudis Espacials de Catalunya
A. J. Ross - The Ohio State University
A. Troja - Laboratório Interinstitucional de e-Astronomia
J. Garcia-Bellido - Universidad Autónoma de Madrid
T. M. C. Abbott - Cerro Tololo Inter-American Observatory
F. B. Abdalla - UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England
S. Allam - Fermi National Accelerator Laboratory
J. Annis - Fermi National Accelerator Laboratory
R. A. Bernstein - Carnegie Observatories
E. Bertin - Centre National de la Recherche Scientifique
S. L. Bridle - University of Manchester
D. Brooks - UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England
E. Buckley-Geer - Fermi National Accelerator Laboratory
D. L. Burke - SLAC National Accelerator Laboratory
A. Carnero Rosell - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
M. Carrasco Kind - University of Illinois Urbana-Champaign
J. Carretero - Institute for High Energy Physics
F. J. Castander - Institut d'Estudis Espacials de Catalunya
R. Cawthon - University of Wisconsin–Madison
C. E. Cunha - Stanford University
C. B. D'Andrea - Fermi National Accelerator Laboratory
J. De Vicente - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
S. Desai - Indian Institute of Technology Hyderabad
H. T. Diehl - Fermi National Accelerator Laboratory
P. Doel - UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England
J. Estrada - Fermi National Accelerator Laboratory
A. E. Evrard - University of Michigan
B. Flaugher - Fermi National Accelerator Laboratory
P. Fosalba - IEEC, E-08193 Barcelona, Spain
J. Frieman - Fermi National Accelerator Laboratory
D. W. Gerdes - University of Michigan
T. Giannantonio - University of Cambridge
R. A. Gruendl - National Center for Supercomputing Applications
J. Gschwend - Laboratório Interinstitucional de e-Astronomia
G. Gutierrez - Fermi National Accelerator Laboratory
D. L. Hollowood - Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
K. Honscheid - The Ohio State University
B. Hoyle - Max Planck Institute for Extraterrestrial Physics
D. J. James - Center for Astrophysics Harvard & Smithsonian
M. W. G. Johnson - National Center for Supercomputing Applications
M. D. Johnson - National Center for Supercomputing Applications
S. Kent - Fermi National Accelerator Laboratory
D. Kirk - University College London
E. Krause - University of Arizona
K. Kuehn - Australian Astronomical Observatory
N. Kuropatkin - Fermi National Accelerator Laboratory
H. Lin - Fermi National Accelerator Laboratory
J. L. Marshall - Mitchell Institute
R. Miquel - Institució Catalana de Recerca i Estudis Avançats
W. J. Percival - Univ Waterloo, Dept Phys & Astron, 200 Univ Ave W, Waterloo, ON N2L 3G1, Canada
A. A. Plazas - Jet Propulsion Laboratory
A. K. Romer - University of Sussex
A. Roodman - SLAC National Accelerator Laboratory
E. Sanchez - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
M. Schubnell - University of Michigan
I. Sevilla-Noarbe - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
M. Smith - University of Southampton
R. C. Smith - Cerro Tololo Inter-American Observatory
M. Soares-Santos - Brandeis University, Martin A. Fisher School of Physics
E. Suchyta - Oak Ridge National Laboratory
M. E. C. Swanson - National Center for Supercomputing Applications
G. Tarle - Institute for High Energy Physics
D. Thomas - University of Portsmouth
D. L. Tucker - Fermi National Accelerator Laboratory
A. R. Walker - Cerro Tololo Inter-American Observatory
J. Zuntz - UK Astronomy Technology Centre
DES Collaboration
Publication Details: Monthly notices of the Royal Astronomical Society, Vol.487(3), pp.3870-3883
Publisher: Oxford Univ Press
Number of pages: 14
Grant note: University of Edinburgh University of Chicago U.S. Department of Energy; United States Department of Energy (DOE) Kavli Institute of Cosmological Physics at the University of Chicago Lawrence Berkeley National Laboratory; United States Department of Energy (DOE) AST-1138766; AST-1536171 / National Science foundation; National Science Foundation (NSF) 465376/2014-2 / Instituto Nacional de Ciencia e Tecnologia (INCT) e-Universe (CNPq); Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ); Fundacao de Apoio a Pesquisa do Distrito Federal (FAPDF) Ministerio da Ciencia, Tecnologia e Inovacao; Spanish Government Ministry of Science and Education of Spain; Spanish Government Institut de Ciencies de l'Espai (IEEC/CSIC)
Identifiers: 9924552844401921
Academic Unit: Martin A. Fisher School of Physics
Language: English
Resource Type: Journal article

Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum

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