publication . Article . Preprint . 2019

Dark Energy Survey Year 1 results: validation of weak lensing cluster member contamination estimates from P(z) decomposition

Varga, T.N.; DeRose, J.; Gruen, D.; McClintock, T.; Seitz, S.; ROZO, E.; Costanzi, M.; Hoyle, B.; MacCrann, N.; Plazas, A.A.; ...
Open Access English
  • Published: 01 Jan 2019
  • Publisher: OXFORD UNIV PRESS
Abstract
Weak lensing source galaxy catalogs used in estimating the masses of galaxy clusters can be heavily contaminated by cluster members, prohibiting accurate mass calibration. In this study we test the performance of an estimator for the extent of cluster member contamination based on decomposing the photometric redshift $P(z)$ of source galaxies into contaminating and background components. We perform a full scale mock analysis on a simulated sky survey approximately mirroring the observational properties of the Dark Energy Survey Year One observations (DES Y1), and find excellent agreement between the true number profile of contaminating cluster member galaxies in...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: gravitational lensing: weak, galaxies: clusters: general, cosmology: observations, gravitational lensing: weak, galaxies: clusters: general, cosmology: observations, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Funded by
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • 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
,
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
,
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
91 references, page 1 of 7

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Allen S. W., Evrard A. E., Mantz A. B., 2011, ARA&A, 49, 409

Applegate D. E. et al., 2014, MNRAS, 439, 48

Bartelmann M., Schneider P., 2001, Phys. Rep., 340, 291

Battaglia N. et al., 2016, J. Cosmology Astropart. Phys., 8, 013

Benítez N., 2000, ApJ, 536, 571

Bleem L. E. et al., 2015, ApJS, 216, 27

Bonnett C., et al., 2015, arXiv:1507.05909

Budzynski J. M. et al., 2012, MNRAS, 423, 104

Butcher H., Oemler Jr. A., 1978, ApJ, 219, 18

Chang C. et al., 2015, ApJ, 801, 73

Chang C. et al., 2018, ApJ, 864, 83

Coe D. et al., 2006, AJ, 132, 926

Conroy C., Wechsler R. H., Kravtsov A. V., 2006, ApJ, 647, 201

Cooper M. C. et al., 2011, ApJS, 193, 14

91 references, page 1 of 7
Abstract
Weak lensing source galaxy catalogs used in estimating the masses of galaxy clusters can be heavily contaminated by cluster members, prohibiting accurate mass calibration. In this study we test the performance of an estimator for the extent of cluster member contamination based on decomposing the photometric redshift $P(z)$ of source galaxies into contaminating and background components. We perform a full scale mock analysis on a simulated sky survey approximately mirroring the observational properties of the Dark Energy Survey Year One observations (DES Y1), and find excellent agreement between the true number profile of contaminating cluster member galaxies in...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: gravitational lensing: weak, galaxies: clusters: general, cosmology: observations, gravitational lensing: weak, galaxies: clusters: general, cosmology: observations, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Funded by
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • 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
,
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
,
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
91 references, page 1 of 7

Aihara H. et al., 2018, PASJ, 70, S4

Allen S. W., Evrard A. E., Mantz A. B., 2011, ARA&A, 49, 409

Applegate D. E. et al., 2014, MNRAS, 439, 48

Bartelmann M., Schneider P., 2001, Phys. Rep., 340, 291

Battaglia N. et al., 2016, J. Cosmology Astropart. Phys., 8, 013

Benítez N., 2000, ApJ, 536, 571

Bleem L. E. et al., 2015, ApJS, 216, 27

Bonnett C., et al., 2015, arXiv:1507.05909

Budzynski J. M. et al., 2012, MNRAS, 423, 104

Butcher H., Oemler Jr. A., 1978, ApJ, 219, 18

Chang C. et al., 2015, ApJ, 801, 73

Chang C. et al., 2018, ApJ, 864, 83

Coe D. et al., 2006, AJ, 132, 926

Conroy C., Wechsler R. H., Kravtsov A. V., 2006, ApJ, 647, 201

Cooper M. C. et al., 2011, ApJS, 193, 14

91 references, page 1 of 7
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