publication . Other literature type . Article . Research . Preprint . 2017 . Embargo end date: 25 Feb 2019

Dark Energy Survey Year 1 Results: Calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations

I. Sevilla-Noarbe; Eli S. Rykoff; Eli S. Rykoff; M. E. C. Swanson; M. Carrasco Kind; M. Carrasco Kind; Ramon Miquel; E. J. Sanchez; Tim Eifler; Tim Eifler; ...
Open Access
  • Published: 01 Dec 2017
  • Publisher: Apollo - University of Cambridge Repository
Abstract
We present calibrations of the redshift distributions of redMaGiC galaxies in the Dark Energy Survey Year 1 (DES Y1) and Sloan Digital Sky Survey (SDSS) DR8 data. These results determine the priors of the redshift distribution of redMaGiC galaxies, which were used for galaxy clustering measurements and as lenses for galaxy-galaxy lensing measurements in DES Y1 cosmological analyses. We empirically determine the bias in redMaGiC photometric redshift estimates using angular cross-correlations with Baryon Oscillation Spectroscopic Survey (BOSS) galaxies. For DES, we calibrate a single parameter redshift bias in three photometric redshift bins: $z \in[0.15,0.3]$, [0...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Instrumentation and Methods for Astrophysics
free text keywords: large-scale structure of Universe, galaxies: distances and redshifts, surveys, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], RCUK, STFC, AST-1536171, AST-1138766, uploaded-in-3-months-elsewhere, Levantamentos, Galaxies distances and redshifts, Large scale structure of universe, surveys, galaxies: distances and redshifts, large-scale structure of Universe, Astrophysics - Cosmology and Nongalactic Astrophysics, Space and Planetary Science, Astronomy and Astrophysics, Redshift, Baryon, Photometry (optics), Calibration, Dark energy, Astrophysics, Sky, media_common.quotation_subject, media_common, Photometric redshift, Physics, Galaxy
Funded by
NSF| Physics Frontier Center at the Kavli Institute for Cosmological Physics: Pushing Cosmology to the Edge
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1125897
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Physics
,
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
,
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
,
EC| TESTDE
Project
TESTDE
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
64 references, page 1 of 5

Davis C. et al., 2017, preprint (arXiv:1710.02517)

Davis C. et al., 2018, MNRAS, 477, 2196

Dawson K. S. et al., 2013, AJ, 145, 10

Dawson K. S. et al., 2016, AJ, 151, 44

de Jong R. S. et al., 2012, in Ground-based and Airborne Instrumentation for Astronomy IV, p. 84460T

de Jong J. T. A. et al., 2013, The Messenger, 154, 44

DeRose J., Wechsler R., Rykoff E. et al., 2018, in prep.

DES Collaboration et al., 2018, Phys. Rev. D, 98, 043526

Drlica-Wagner A. et al., 2018, ApJS, 235, 33

Elvin-Poole J. et al., 2018, Phys. Rev. D, 98, 042006

Gatti M. et al., 2018, MNRAS, 477, 1664

Gruen D. et al., 2018, Phys. Rev. D, 98, 023507

Heymans C. et al., 2012, MNRAS, 427, 146

Hildebrandt H. et al., 2010, A&A, 523, A31

Hildebrandt H. et al., 2017, MNRAS, 465, 1454

64 references, page 1 of 5
Abstract
We present calibrations of the redshift distributions of redMaGiC galaxies in the Dark Energy Survey Year 1 (DES Y1) and Sloan Digital Sky Survey (SDSS) DR8 data. These results determine the priors of the redshift distribution of redMaGiC galaxies, which were used for galaxy clustering measurements and as lenses for galaxy-galaxy lensing measurements in DES Y1 cosmological analyses. We empirically determine the bias in redMaGiC photometric redshift estimates using angular cross-correlations with Baryon Oscillation Spectroscopic Survey (BOSS) galaxies. For DES, we calibrate a single parameter redshift bias in three photometric redshift bins: $z \in[0.15,0.3]$, [0...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Instrumentation and Methods for Astrophysics
free text keywords: large-scale structure of Universe, galaxies: distances and redshifts, surveys, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], RCUK, STFC, AST-1536171, AST-1138766, uploaded-in-3-months-elsewhere, Levantamentos, Galaxies distances and redshifts, Large scale structure of universe, surveys, galaxies: distances and redshifts, large-scale structure of Universe, Astrophysics - Cosmology and Nongalactic Astrophysics, Space and Planetary Science, Astronomy and Astrophysics, Redshift, Baryon, Photometry (optics), Calibration, Dark energy, Astrophysics, Sky, media_common.quotation_subject, media_common, Photometric redshift, Physics, Galaxy
Funded by
NSF| Physics Frontier Center at the Kavli Institute for Cosmological Physics: Pushing Cosmology to the Edge
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1125897
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Physics
,
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
,
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
,
EC| TESTDE
Project
TESTDE
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
64 references, page 1 of 5

Davis C. et al., 2017, preprint (arXiv:1710.02517)

Davis C. et al., 2018, MNRAS, 477, 2196

Dawson K. S. et al., 2013, AJ, 145, 10

Dawson K. S. et al., 2016, AJ, 151, 44

de Jong R. S. et al., 2012, in Ground-based and Airborne Instrumentation for Astronomy IV, p. 84460T

de Jong J. T. A. et al., 2013, The Messenger, 154, 44

DeRose J., Wechsler R., Rykoff E. et al., 2018, in prep.

DES Collaboration et al., 2018, Phys. Rev. D, 98, 043526

Drlica-Wagner A. et al., 2018, ApJS, 235, 33

Elvin-Poole J. et al., 2018, Phys. Rev. D, 98, 042006

Gatti M. et al., 2018, MNRAS, 477, 1664

Gruen D. et al., 2018, Phys. Rev. D, 98, 023507

Heymans C. et al., 2012, MNRAS, 427, 146

Hildebrandt H. et al., 2010, A&A, 523, A31

Hildebrandt H. et al., 2017, MNRAS, 465, 1454

64 references, page 1 of 5
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