Dataciencia

Colección SciELO Chile

Photometric Characterization of the Dark Energy Camera

Indexado

WoS	WOS:000429007100001
Scopus	SCOPUS_ID:85045141029

DOI

10.1088/1538-3873/AAA753

Año

2018

Tipo

artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras

Abstract

We characterize the variation in photometric response of the Dark Energy Camera (DECam) across its 520 Mpix science array during 4 years of operation. These variations are measured using high signal-to-noise aperture photometry of >10(7) stellar images in thousands of exposures of a few selected fields, with the telescope dithered to move the sources around the array. A calibration procedure based on these results brings the rms variation in aperture magnitudes of bright stars on cloudless nights down to 2-3 mmag, with <1 mmag of correlated photometric errors for stars separated by >= 20 ''. On cloudless nights, any departures of the exposure zeropoints from a secant airmass law exceeding <1 mmag are plausibly attributable to spatial/temporal variations in aperture corrections. These variations can be inferred and corrected by measuring the fraction of stellar light in an annulus between 6 '' and 8 '' diameter. Key elements of this calibration include: correction of amplifier nonlinearities; distinguishing pixel-area variations and stray light from quantum-efficiency variations in the flat fields; field-dependent color corrections; and the use of an aperture-correction proxy. The DECam response pattern across the 2 degrees field drifts over months by up to +/- 9 mmag, in a nearly wavelength-independent low-order pattern. We find no fundamental barriers to pushing global photometric calibrations toward mmag accuracy.

Revista

Revista	ISSN
Publications Of The Astronomical Society Of The Pacific	0004-6280

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Disciplinas de Investigación

WOS
Astronomy & Astrophysics

Scopus
Sin Disciplinas

SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional

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Autores - Afiliación

Ord.	Autor	Género	Institución - País
1	Bernstein, G. M.	Hombre	UNIV PENN - Estados Unidos University of Pennsylvania - Estados Unidos
2	ABBOTT, TIMOTHY	Hombre	Natl Opt Astron Observ - Chile Cerro Tololo Inter American Observatory - Chile
3	Armstrong, Robert	Hombre	Princeton Univ - Estados Unidos Princeton University - Estados Unidos
4	Burke, D. L.	Hombre	Universidad de Stanford - Estados Unidos SLAC Natl Accelerator Lab - Estados Unidos Kavli Institute for Particle Astrophysics and Cosmology - Estados Unidos SLAC National Accelerator Laboratory - Estados Unidos Stanford Univ - Estados Unidos
5	Diehl, H. T.	Hombre	Fermilab Natl Accelerator Lab - Estados Unidos Fermi National Accelerator Laboratory - Estados Unidos
6	Gruen, D.	Hombre	UNIV ILLINOIS - Estados Unidos Natl Ctr Supercomp Applicat - Estados Unidos University of Illinois at Urbana-Champaign - Estados Unidos University of Illinois Urbana-Champaign - Estados Unidos
7	Johnson, Margaret W. G.	Mujer	Natl Ctr Supercomp Applicat - Estados Unidos University of Illinois at Urbana-Champaign - Estados Unidos University of Illinois Urbana-Champaign - Estados Unidos
7	Johnson, M. D.	-	University of Illinois Urbana-Champaign - Estados Unidos Natl Ctr Supercomp Applicat - Estados Unidos
8	Bulik, T.	Hombre	Fermilab Natl Accelerator Lab - Estados Unidos Fermi National Accelerator Laboratory - Estados Unidos
9	Rykoff, E.	Mujer	Universidad de Stanford - Estados Unidos SLAC Natl Accelerator Lab - Estados Unidos Kavli Institute for Particle Astrophysics and Cosmology - Estados Unidos SLAC National Accelerator Laboratory - Estados Unidos Stanford Univ - Estados Unidos
10	WALKER, ALISTAIR	Hombre	Natl Opt Astron Observ - Chile Cerro Tololo Inter American Observatory - Chile
11	Wester, William	Hombre	Fermilab Natl Accelerator Lab - Estados Unidos Fermi National Accelerator Laboratory - Estados Unidos
12	Yanny, B.	Hombre	Fermilab Natl Accelerator Lab - Estados Unidos Fermi National Accelerator Laboratory - Estados Unidos

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Origen de Citas Identificadas

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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 5.56 %
Citas No-identificadas: 94.44 %

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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 5.56 %
Citas No-identificadas: 94.44 %

Financiamiento

Fuente
MINECO
National Science Foundation
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministerio de Economía y Competitividad
Ministerio de Educación, Cultura y Deporte
European Commission
European Regional Development Fund
University of Illinois at Urbana-Champaign
Generalitat de Catalunya
Australian Research Council
Deutsche Forschungsgemeinschaft
Financiadora de Estudos e Projetos
European Research Council
U.S. Department of Energy
U.S. National Science Foundation
Ohio State University
Consejo Superior de Investigaciones Científicas
Department of Energy
Science and Technology Facilities Council
FP7/2007
Seventh Framework Programme
Lawrence Berkeley National Laboratory
University of Portsmouth
University of Chicago
Science and Technology Facilities Council of the United Kingdom
University of Cambridge
Office of Science
University of Michigan
Ministry of Science and Education of Spain
Higher Education Funding Council for England
National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign
Kavli Institute of Cosmological Physics at the University of Chicago
Center for Cosmology and Astro-Particle Physics at the Ohio State University
Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University
Ministerio da Ciencia, Tecnologia e Inovacao
Argonne National Laboratory
University College London
University of Edinburgh
Eidgenossische Technische Hochschule (ETH) Zurich
Fermi National Accelerator Laboratory
Institut de Ciencies de l'Espai (IEEC/CSIC)
Institut de Fisica d'Altes Energies
Ludwig-Maximilians Universitat Munchen
National Optical Astronomy Observatory
University of Nottingham
OzDES Membership Consortium
University of Pennsylvania
SLAC National Accelerator Laboratory
University of Sussex
Texas AM University
University of California at Santa Cruz
Stanford University
DES-Brazil Consortium
ERDF funds from the European Union
CERCA program of the Generalitat de Catalunya
European Research Council under the European Union
U.S. Department of Energy, Office of Science, Office of High Energy Physics
Centro de Investigaciones Energeticas
Medioambientales y Tecnologicas-Madrid
Association of Canadian Universities for Research in Astronomy
Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO)
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Fermi Research Alliance, LLC
Australian Research Council Centre of Excellence for All-sky Astrophysics
Texas A and M University
Eidgenossische Technische Hochschule Zurich
Institute of Physics
Centre of Excellence for Electromaterials Science, Australian Research Council
National Centre for Supercomputing Applications
High Energy Physics
University of California, Santa Cruz
University of Illinois at UrbanaChampaign
Institut de Ciències de
European Union’s Seventh Frame-work Program
National Council for Eurasian and East European Research
DES-Brazil
Ludwig-Maximilians-Universitat Munchen
Universidade do Estado de Santa Catarina
Engineering Research Centers
Texas A and M International University
Division Of Astronomical Sciences; Direct For Mathematical & Physical Scien

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Agradecimientos

Agradecimiento
We thank the anonymous referee for improving the clarity of the paper. G.M.B. gratefully acknowledges support from grants AST-1311924 and AST-1615555 from the National Science Foundation, and DE-SC0007901 from the Department of Energy. Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico and the Ministerio da Ciencia, Tecnologia e Inovacao, the Deutsche Forschungsgemeinschaft and the Collaborating Institutions in the Dark Energy Survey.The Collaborating Institutions are Argonne National Laboratory, the University of California at Santa Cruz, the University of Cambridge, Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas-Madrid, the University of Chicago, University College London, the DES-Brazil Consortium, the University of Edinburgh, the Eidgenossische Technische Hochschule (ETH) Zurich, Fermi National Accelerator Laboratory, the University of Illinois at UrbanaChampaign, the Institut de Ciencies de l'Espai (IEEC/CSIC), the Institut de Fisica d'Altes Energies, Lawrence Berkeley National Laboratory, the Ludwig-Maximilians Universitat Munchen and the associated Excellence Cluster Universe, the University of Michigan, the National Optical Astronomy Observatory, the University of Nottingham, The Ohio State University, the University of Pennsylvania, the University of Portsmouth, SLAC National Accelerator Laboratory, Stanford University, the University of Sussex, Texas A&M University, and the OzDES Membership Consortium.The DES data management system is supported by the National Science Foundation under grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA201571825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project number CE110001020.This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.
Based in part on observations at Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation.

Agradecimiento

We thank the anonymous referee for improving the clarity of the paper. G.M.B. gratefully acknowledges support from grants AST-1311924 and AST-1615555 from the National Science Foundation, and DE-SC0007901 from the Department of Energy. Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico and the Ministerio da Ciencia, Tecnologia e Inovacao, the Deutsche Forschungsgemeinschaft and the Collaborating Institutions in the Dark Energy Survey.The Collaborating Institutions are Argonne National Laboratory, the University of California at Santa Cruz, the University of Cambridge, Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas-Madrid, the University of Chicago, University College London, the DES-Brazil Consortium, the University of Edinburgh, the Eidgenossische Technische Hochschule (ETH) Zurich, Fermi National Accelerator Laboratory, the University of Illinois at UrbanaChampaign, the Institut de Ciencies de l'Espai (IEEC/CSIC), the Institut de Fisica d'Altes Energies, Lawrence Berkeley National Laboratory, the Ludwig-Maximilians Universitat Munchen and the associated Excellence Cluster Universe, the University of Michigan, the National Optical Astronomy Observatory, the University of Nottingham, The Ohio State University, the University of Pennsylvania, the University of Portsmouth, SLAC National Accelerator Laboratory, Stanford University, the University of Sussex, Texas A&M University, and the OzDES Membership Consortium.The DES data management system is supported by the National Science Foundation under grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA201571825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project number CE110001020.This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.

Based in part on observations at Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation.