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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
RedMaGiC: Selecting luminous red galaxies from the DES Science Verification data
Monthly Notices of the Royal Astronomical Society, Volume 461, No. 2, Year 2016
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Description
We introduce redMaGiC, an automated algorithm for selecting luminous red galaxies (LRGs). The algorithm was specifically developed to minimize photometric redshift uncertainties in photometric large-scale structure studies. redMaGiC achieves this by self-training the colour cuts necessary to produce a luminosity-thresholded LRG sample of constant comoving density. We demonstrate that redMaGiC photo-zs are very nearly as accurate as the best machine learning-based methods, yet they require minimal spectroscopic training, do not suffer from extrapolation biases, and are very nearly Gaussian. We apply our algorithm to Dark Energy Survey (DES) Science Verification (SV) data to produce a redMaGiC catalogue sampling the redshift range z ∈ [0.2, 0.8]. Our fiducial sample has a comoving space density of 10-3 (h-1 Mpc)-3, and a median photo-z bias (zspec - zphoto) and scatter (σz/(1 + z)) of 0.005 and 0.017, respectively. The corresponding 5σ outlier fraction is 1.4 per cent. We also test our algorithm with Sloan Digital Sky Survey Data Release 8 and Stripe 82 data, and discuss how spectroscopic training can be used to control photo-z biases at the 0.1 per cent level. © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
Authors & Co-Authors
Rozo, Eduardo
United States, Tucson
The University of Arizona
Rykoff, Eli S.
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
United States, Menlo Park
Slac National Accelerator Laboratory
Bonnett, Christopher
Spain, Cerdanyola Del Valles
Institut de Física D'altes Energies, Bellaterra
Crocce, Martín
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Davis, Christopher P.
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Brisbane
The University of Queensland
Hoyle, Ben
Germany, Munich
Ludwig-maximilians-universität München
Leistedt, Boris
United Kingdom, London
University College London
Peiris, Hiranya V.
United Kingdom, London
University College London
Wechsler, Risa H.
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
United States, Menlo Park
Slac National Accelerator Laboratory
United States, Palo Alto
Stanford University
Abbott, Timothy M.C.
Chile, La Serena
Cerro Tololo Inter American Observatory
Abdalla, Fillipe Batoni
United Kingdom, London
University College London
Banerji, Manda
United Kingdom, Cambridge
University of Cambridge
Bauer, Anne H.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Benoit-Lévy, Aurélien
United Kingdom, London
University College London
Bernstein, Gary M.
United States, Philadelphia
University of Pennsylvania
Bertin, Emmanuel
France, Paris
Cnrs Centre National de la Recherche Scientifique
France, Paris
Institut D’astrophysique de Paris
Brooks, David D.
United Kingdom, London
University College London
Buckley-Geer, Elizabeth J.
United States, Batavia
Fermi National Accelerator Laboratory
Burke, David L.
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
United States, Menlo Park
Slac National Accelerator Laboratory
Capozzi, Diego
United Kingdom, Portsmouth
University of Portsmouth
Rosell, Aurelio Carnero
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Sao Cristovao
Observatório Nacional
Carollo, Daniela
United States, Notre Dame
University of Notre Dame
Carrasco-Kind, Matias
United States, Urbana
University of Illinois Urbana-champaign
Carretero, J. Hernández
Spain, Cerdanyola Del Valles
Institut de Física D'altes Energies, Bellaterra
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Castander, Francisco Javier J.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Childress, Michael J.
Australia, Canberra
The Australian National University
Cunha, Carlos E.
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
D'Andrea, Chris B.
United Kingdom, Portsmouth
University of Portsmouth
Davis, Tamara M.
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Brisbane
The University of Queensland
DePoy, Darren L.
United States, College Station
Texas A&m University
Desai, Shantanu
Germany, Garching Bei Munchen
Exzellenzcluster Origins
Germany, Munich
Ludwig-maximilians-universität München
Diehl, H. Thomas
United States, Batavia
Fermi National Accelerator Laboratory
Dietrich, Jörg P.
Germany, Munich
Ludwig-maximilians-universität München
Germany, Garching Bei Munchen
Exzellenzcluster Origins
Doel, Peter
United Kingdom, London
University College London
Eifler, Tim F.
United States, Philadelphia
University of Pennsylvania
United States, Pasadena
California Institute of Technology
Evrard, August E.
United States, Ann Arbor
University of Michigan, Ann Arbor
Fausti-Neto, Angelo
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Flaugher, Brenna L.
United States, Batavia
Fermi National Accelerator Laboratory
Fosalba, Pablo
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Frieman, Joshua A.
United States, Batavia
Fermi National Accelerator Laboratory
United States, Chicago
The University of Chicago
Gaztañaga, E.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Gerdes, David W.
United States, Ann Arbor
University of Michigan, Ann Arbor
Glazebrook, Karl G.
Australia, Hawthorn
Swinburne University of Technology
Gruen, Daniel
Germany, Munich
Ludwig-maximilians-universität München
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Gruendl, Robert A.
United States, Urbana
University of Illinois Urbana-champaign
Honscheiď, Klaus
United States, Columbus
The Ohio State University
James, David J.
Chile, La Serena
Cerro Tololo Inter American Observatory
Jarvis, Michael
United States, Philadelphia
University of Pennsylvania
Kim, Alex G.
United States, Berkeley
Lawrence Berkeley National Laboratory
Kuehn, Kyler W.
Australia
Australian Astronomical Observatory
Kuropatkin, Nikolay P.
United States, Batavia
Fermi National Accelerator Laboratory
Lahav, Ofer
United Kingdom, London
University College London
Lidman, Christopher E.
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia
Australian Astronomical Observatory
Lima, Marcos V.B.T.
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Sao Paulo
Universidade de São Paulo
Maia, Marcioa Antonio Geimba
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Sao Cristovao
Observatório Nacional
March, Marisa Cristina
United States, Philadelphia
University of Pennsylvania
Martini, Paul
United States, Columbus
The Ohio State University
Melchior, Peter
United States, Columbus
The Ohio State University
Miller, Christopher J.
United States, Ann Arbor
University of Michigan, Ann Arbor
Miquel, Ramon
Spain, Cerdanyola Del Valles
Institut de Física D'altes Energies, Bellaterra
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
Mohr, Joseph
Germany, Garching Bei Munchen
Exzellenzcluster Origins
Germany, Munich
Ludwig-maximilians-universität München
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Nichol, Robert C.
United Kingdom, Portsmouth
University of Portsmouth
Nord, Brian D.
United States, Batavia
Fermi National Accelerator Laboratory
O'Neill, Conor R.
Australia, Brisbane
The University of Queensland
Ogando, R. L.C.
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Sao Cristovao
Observatório Nacional
Plazas, Andreas Alejandro
United States, Pasadena
California Institute of Technology
Römer, Anita Kathy
United Kingdom, Brighton
University of Sussex
Roodman, Aaron J.
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
United States, Menlo Park
Slac National Accelerator Laboratory
Sako, Masao
United States, Philadelphia
University of Pennsylvania
Sánchez, Eusebio J.
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Santiago, Basillio Xavier
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Porto Alegre
Universidade Federal do Rio Grande do Sul
Schubnell, Michael S.
United States, Ann Arbor
University of Michigan, Ann Arbor
Sevilla, Ignacio
United States, Urbana
University of Illinois Urbana-champaign
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Smith, Robert Chris
Chile, La Serena
Cerro Tololo Inter American Observatory
Soares-Santos, Marcelle
United States, Batavia
Fermi National Accelerator Laboratory
Sobreira, Flávia
United States, Batavia
Fermi National Accelerator Laboratory
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Suchyta, Eric
United States, Columbus
The Ohio State University
Swanson, Mollye E.C.
United States, Urbana
University of Illinois Urbana-champaign
Thaler, Jon J.
United States, Urbana
University of Illinois Urbana-champaign
Thomas, Daniel B.
United Kingdom, Portsmouth
University of Portsmouth
Uddin, Syed Ashraf
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Hawthorn
Swinburne University of Technology
Vikram, Vinu
United States, Lemont
Argonne National Laboratory
Walker, Alistair R.
Chile, La Serena
Cerro Tololo Inter American Observatory
Wester, William C.
United States, Batavia
Fermi National Accelerator Laboratory
Zhang, Yuanyuan
United States, Ann Arbor
University of Michigan, Ann Arbor
da Costa, Luiz Nicolaci
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Sao Cristovao
Observatório Nacional
Statistics
Citations: 152
Authors: 86
Affiliations: 38
Identifiers
Doi:
10.1093/mnras/stw1281
ISSN:
00358711
Study Design
Cross Sectional Study
Study Approach
Quantitative