Improved Tomographic Binning of 3 × 2 pt Lens Samples: Neural Network Classifiers and Optimal Bin Assignments

Moskowitz, Irene; Gawiser, Eric; Bault, Abby; Broussard, Adam; Newman, Jeffrey A.; Zuntz, Joe

doi:10.3847/1538-4357/accc88

Title: Improved Tomographic Binning of 3 × 2 pt Lens Samples: Neural Network Classifiers and Optimal Bin Assignments

Journal Article · 08 June 2023 · The Astrophysical Journal

DOI: https://doi.org/10.3847/1538-4357/accc88 · OSTI ID:1984711

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Abstract Large imaging surveys, such as the Legacy Survey of Space and Time, rely on photometric redshifts and tomographic binning for 3 × 2 pt analyses that combine galaxy clustering and weak lensing. In this paper, we propose a method for optimizing the tomographic binning choice for the lens sample of galaxies. We divide the CosmoDC2 and Buzzard simulated galaxy catalogs into a training set and an application set, where the training set is nonrepresentative in a realistic way, and then estimate photometric redshifts for the application sets. The galaxies are sorted into redshift bins covering equal intervals of redshift or comoving distance, or with an equal number of galaxies in each bin, and we consider a generalized extension of these approaches. We find that bins of equal comoving distance produce the highest dark energy figure of merit of the initial binning choices, but that the choice of bin edges can be further optimized. We then train a neural network classifier to identify galaxies that are either highly likely to have accurate photometric redshift estimates or highly likely to be sorted into the correct redshift bin. The neural network classifier is used to remove poor redshift estimates from the sample, and the results are compared to the case when none of the sample is removed. We find that the neural network classifiers are able to improve the figure of merit by ∼13% and are able to recover ∼25% of the loss in the figure of merit that occurs when a nonrepresentative training sample is used.

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Research Organization:: Rutgers Univ., Piscataway, NJ (United States); Stanford Univ., CA (United States); Univ. of California, Oakland, CA (United States); Univ. of Pittsburgh, PA (United States)

Sponsoring Organization:: LSST Corporation; National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: The LSST Dark Energy Science Collaboration

Grant/Contract Number:: AC02-05CH11231; AC02-76SF00515; SC0007914; SC0010008

OSTI ID:: 1984711

Journal Information:: The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 1 Vol. 950; ISSN 0004-637X

Publisher:: American Astronomical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

References (62)

Halo models of large scale structure Cooray, A.; Sheth, R. Physics Reports, Vol. 372, Issue 1 https://doi.org/10.1016/S0370-1573(02)00276-4	journal	December 2002
Galacticus: A semi-analytic model of galaxy formation Benson, Andrew J. New Astronomy, Vol. 17, Issue 2 https://doi.org/10.1016/j.newast.2011.07.004	journal	February 2012
Large-scale galaxy bias Desjacques, Vincent; Jeong, Donghui; Schmidt, Fabian Physics Reports, Vol. 733 https://doi.org/10.1016/j.physrep.2017.12.002	journal	February 2018
The VIMOS VLT Deep Survey final data release: a spectroscopic sample of 35 016 galaxies and AGN out to z ~ 6.7 selected with 17.5 ≤ i _AB ≤ 24.75 Le Fèvre, O.; Cassata, P.; Cucciati, O. Astronomy & Astrophysics, Vol. 559 https://doi.org/10.1051/0004-6361/201322179	journal	October 2013
The VIMOS Public Extragalactic Survey (VIPERS): First Data Release of 57 204 spectroscopic measurements Garilli, B.; Guzzo, L.; Scodeggio, M. Astronomy & Astrophysics, Vol. 562 https://doi.org/10.1051/0004-6361/201322790	journal	January 2014
The Sloan Digital Sky Survey Quasar Catalog: Fourteenth data release Pâris, Isabelle; Petitjean, Patrick; Aubourg, Éric Astronomy & Astrophysics, Vol. 613 https://doi.org/10.1051/0004-6361/201732445	journal	May 2018
Planck 2018 results: VI. Cosmological parameters Aghanim, N.; Akrami, Y.; Ashdown, M. Astronomy & Astrophysics, Vol. 641, A6 https://doi.org/10.1051/0004-6361/201833910	journal	September 2020
Photometric redshift calibration with self-organising maps Wright, A. H.; Hildebrandt, H.; van den Busch, J. L. Astronomy & Astrophysics https://doi.org/10.1051/0004-6361/201936782	journal	April 2020
KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints Heymans, Catherine; Tröster, Tilman; Asgari, Marika Astronomy & Astrophysics, Vol. 646 https://doi.org/10.1051/0004-6361/202039063	journal	February 2021
KiDS-1000 cosmology: Cosmic shear constraints and comparison between two point statistics Asgari, Marika; Lin, Chieh-An; Joachimi, Benjamin Astronomy & Astrophysics, Vol. 645 https://doi.org/10.1051/0004-6361/202039070	journal	January 2021
Photometric redshift estimation with a convolutional neural network: NetZ Schuldt, S.; Suyu, S. H.; Cañameras, R. Astronomy & Astrophysics, Vol. 651 https://doi.org/10.1051/0004-6361/202039945	journal	July 2021
Euclidpreparation Astronomy & Astrophysics, Vol. 655 https://doi.org/10.1051/0004-6361/202141061	journal	November 2021
Accurate photometric redshifts for the CFHT legacy survey calibrated using the VIMOS VLT deep survey Ilbert, O.; Arnouts, S.; McCracken, H. J. Astronomy & Astrophysics, Vol. 457, Issue 3 https://doi.org/10.1051/0004-6361:20065138	journal	September 2006
Formation of Galaxies and Clusters of Galaxies by Self-Similar Gravitational Condensation Press, William H.; Schechter, Paul The Astrophysical Journal, Vol. 187 https://doi.org/10.1086/152650	journal	February 1974
The evolution of large-scale structure in a universe dominated by cold dark matter Davis, M.; Efstathiou, G.; Frenk, C. S. The Astrophysical Journal, Vol. 292 https://doi.org/10.1086/163168	journal	May 1985
ANN z : Estimating Photometric Redshifts Using Artificial Neural Networks Collister, Adrian A.; Lahav, Ofer Publications of the Astronomical Society of the Pacific, Vol. 116, Issue 818 https://doi.org/10.1086/383254	journal	April 2004
The Luminosity and Color Dependence of the Galaxy Correlation Function Zehavi, Idit; Zheng, Zheng; Weinberg, David H. The Astrophysical Journal, Vol. 630, Issue 1 https://doi.org/10.1086/431891	journal	September 2005
EAZY: A Fast, Public Photometric Redshift Code Brammer, Gabriel B.; van Dokkum, Pieter G.; Coppi, Paolo The Astrophysical Journal, Vol. 686, Issue 2 https://doi.org/10.1086/591786	journal	October 2008
The Prism Multi-Object Survey (Primus). i. Survey Overview and Characteristics Coil, Alison L.; Blanton, Michael R.; Burles, Scott M. The Astrophysical Journal, Vol. 741, Issue 1 https://doi.org/10.1088/0004-637X/741/1/8	journal	October 2011
The Prism Multi-Object Survey (Primus). ii. data Reduction and Redshift Fitting Cool, Richard J.; Moustakas, John; Blanton, Michael R. The Astrophysical Journal, Vol. 767, Issue 2 https://doi.org/10.1088/0004-637X/767/2/118	journal	April 2013
Mapping the Galaxy Color–Redshift Relation: Optimal Photometric Redshift Calibration Strategies for Cosmology Surveys Masters, Daniel; Capak, Peter; Stern, Daniel The Astrophysical Journal, Vol. 813, Issue 1 https://doi.org/10.1088/0004-637X/813/1/53	journal	October 2015
THE zCOSMOS 10k-BRIGHT SPECTROSCOPIC SAMPLE Lilly, Simon J.; Le Brun, Vincent; Maier, Christian The Astrophysical Journal Supplement Series, Vol. 184, Issue 2 https://doi.org/10.1088/0067-0049/184/2/218	journal	September 2009
The Deep3 Galaxy Redshift Survey: Keck/Deimos Spectroscopy in the Goods-N Field Cooper, Michael C.; Aird, James A.; Coil, Alison L. The Astrophysical Journal Supplement Series, Vol. 193, Issue 1 https://doi.org/10.1088/0067-0049/193/1/14	journal	March 2011
The Deep2 Galaxy Redshift Survey: Design, Observations, data Reduction, and Redshifts Newman, Jeffrey A.; Cooper, Michael C.; Davis, Marc The Astrophysical Journal Supplement Series, Vol. 208, Issue 1 https://doi.org/10.1088/0067-0049/208/1/5	journal	August 2013
3d-Hst Wfc3-Selected Photometric Catalogs in the five Candels/3d-Hst Fields: Photometry, Photometric Redshifts, and Stellar Masses Skelton, Rosalind E.; Whitaker, Katherine E.; Momcheva, Ivelina G. The Astrophysical Journal Supplement Series, Vol. 214, Issue 2 https://doi.org/10.1088/0067-0049/214/2/24	journal	October 2014
The Eleventh and Twelfth data Releases of the Sloan Digital sky Survey: Final data from Sdss-Iii Alam, Shadab; Albareti, Franco D.; Prieto, Carlos Allende The Astrophysical Journal Supplement Series, Vol. 219, Issue 1 https://doi.org/10.1088/0067-0049/219/1/12	journal	July 2015
THE FMOS-COSMOS SURVEY OF STAR-FORMING GALAXIES AT z ∼ 1.6. III. SURVEY DESIGN, PERFORMANCE, AND SAMPLE CHARACTERISTICS Silverman, J. D.; Kashino, D.; Sanders, D. The Astrophysical Journal Supplement Series, Vol. 220, Issue 1 https://doi.org/10.1088/0067-0049/220/1/12	journal	September 2015
The Sensitivity of GPz Estimates of Photo-z Posterior PDFs to Realistically Complex Training Set Imperfections Stylianou, Natalia; Malz, Alex I.; Hatfield, Peter Publications of the Astronomical Society of the Pacific, Vol. 134, Issue 1034 https://doi.org/10.1088/1538-3873/ac59bf	journal	April 2022
Generating synthetic cosmological data with GalSampler Hearin, Andrew; Korytov, Danila; Kovacs, Eve Monthly Notices of the Royal Astronomical Society, Vol. 495, Issue 4 https://doi.org/10.1093/mnras/staa1495	journal	June 2020
Optimizing tomography for weak gravitational lensing surveys Sipp, Marvin; Schäfer, Björn Malte; Reischke, Robert Monthly Notices of the Royal Astronomical Society, Vol. 501, Issue 1 https://doi.org/10.1093/mnras/staa3710	journal	November 2020
Dark Energy Survey Year 3 results: galaxy clustering and systematics treatment for lens galaxy samples Rodríguez-Monroy, M.; Weaverdyck, N.; Elvin-Poole, J. Monthly Notices of the Royal Astronomical Society, Vol. 511, Issue 2 https://doi.org/10.1093/mnras/stac104	journal	January 2022
The sizes, masses and specific star formation rates of massive galaxies at 1.3 < z < 1.5: strong evidence in favour of evolution via minor mergers McLure, R. J.; Pearce, H. J.; Dunlop, J. S. Monthly Notices of the Royal Astronomical Society, Vol. 428, Issue 2 https://doi.org/10.1093/mnras/sts092	journal	November 2012
TPZ: photometric redshift PDFs and ancillary information by using prediction trees and random forests Carrasco Kind, Matias; Brunner, Robert J. Monthly Notices of the Royal Astronomical Society, Vol. 432, Issue 2 https://doi.org/10.1093/mnras/stt574	journal	May 2013
High-velocity outflows from young star-forming galaxies in the UKIDSS Ultra-Deep Survey Bradshaw, E. J.; Almaini, O.; Hartley, W. G. Monthly Notices of the Royal Astronomical Society, Vol. 433, Issue 1 https://doi.org/10.1093/mnras/stt715	journal	May 2013
Galaxy And Mass Assembly (GAMA): end of survey report and data release 2 Liske, J.; Baldry, I. K.; Driver, S. P. Monthly Notices of the Royal Astronomical Society, Vol. 452, Issue 2 https://doi.org/10.1093/mnras/stv1436	journal	July 2015
RCSLenS: The Red Cluster Sequence Lensing Survey Hildebrandt, H.; Choi, A.; Heymans, C. Monthly Notices of the Royal Astronomical Society, Vol. 463, Issue 1 https://doi.org/10.1093/mnras/stw2013	journal	August 2016
On the realistic validation of photometric redshifts Beck, R.; Lin, C. -A.; Ishida, E. E. O. Monthly Notices of the Royal Astronomical Society, Vol. 468, Issue 4 https://doi.org/10.1093/mnras/stx687	journal	March 2017
UniverseMachine: The correlation between galaxy growth and dark matter halo assembly from z = 0−10 Behroozi, Peter; Wechsler, Risa H.; Hearin, Andrew P. Monthly Notices of the Royal Astronomical Society, Vol. 488, Issue 3 https://doi.org/10.1093/mnras/stz1182	journal	May 2019
The Hyper Suprime-Cam SSP Survey: Overview and survey design Aihara, Hiroaki; Arimoto, Nobuo; Armstrong, Robert Publications of the Astronomical Society of Japan, Vol. 70, Issue SP1 https://doi.org/10.1093/pasj/psx066	journal	September 2017
Second data release of the Hyper Suprime-Cam Subaru Strategic Program Aihara, Hiroaki; AlSayyad, Yusra; Ando, Makoto Publications of the Astronomical Society of Japan https://doi.org/10.1093/pasj/psz103	journal	October 2019
Cosmological constraints from cosmic shear two-point correlation functions with HSC survey first-year data Hamana, Takashi; Shirasaki, Masato; Miyazaki, Satoshi Publications of the Astronomical Society of Japan, Vol. 72, Issue 1 https://doi.org/10.1093/pasj/psz138	journal	February 2020
Dark Energy Survey Year 3 results: Cosmology from cosmic shear and robustness to modeling uncertainty Secco, L. F.; Samuroff, S.; Krause, E. Physical Review D, Vol. 105, Issue 2 https://doi.org/10.1103/physrevd.105.023515	journal	January 2022
Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing Abbott, T. M. C.; Abdalla, F. B.; Alarcon, A. Physical Review D, Vol. 98, Issue 4 https://doi.org/10.1103/physrevd.98.043526	journal	August 2018
Preparing for the cosmic shear data flood: Optimal data extraction and simulation requirements for stage IV dark energy experiments Taylor, Peter L.; Kitching, Thomas D.; McEwen, Jason D. Physical Review D, Vol. 98, Issue 4 https://doi.org/10.1103/physrevd.98.043532	journal	August 2018
Rainbow cosmic shear: Optimization of tomographic bins Kitching, Thomas D.; Taylor, Peter L.; Capak, Peter Physical Review D, Vol. 99, Issue 6 https://doi.org/10.1103/physrevd.99.063536	journal	March 2019
Cosmological parameters from lensing power spectrum and bispectrum tomography Takada, Masahiro; Jain, Bhuvnesh Monthly Notices of the Royal Astronomical Society, Vol. 348, Issue 3 https://doi.org/10.1111/j.1365-2966.2004.07410.x	journal	March 2004
The cosmological simulation code gadget-2 Springel, Volker Monthly Notices of the Royal Astronomical Society, Vol. 364, Issue 4 https://doi.org/10.1111/j.1365-2966.2005.09655.x	journal	December 2005
The WiggleZ Dark Energy Survey: survey design and first data release Drinkwater, Michael J.; Jurek, Russell J.; Blake, Chris Monthly Notices of the Royal Astronomical Society, Vol. 401, Issue 3 https://doi.org/10.1111/j.1365-2966.2009.15754.x	journal	January 2010
CFHTLenS: the Canada–France–Hawaii Telescope Lensing Survey: CFHTLenS Heymans, Catherine; Van Waerbeke, Ludovic; Miller, Lance Monthly Notices of the Royal Astronomical Society, Vol. 427, Issue 1 https://doi.org/10.1111/j.1365-2966.2012.21952.x	journal	October 2012
The LSST-DESC 3x2pt Tomography Optimization Challenge Zuntz, Joe; Lanusse, François; Malz, Alex I. The Open Journal of Astrophysics, Vol. 4, Issue 1 https://doi.org/10.21105/astro.2108.13418	journal	October 2021
The Sdss-Iv Extended Baryon Oscillation Spectroscopic Survey: Overview and Early data Dawson, Kyle S.; Kneib, Jean-Paul; Percival, Will J. The Astronomical Journal, Vol. 151, Issue 2 https://doi.org/10.3847/0004-6256/151/2/44	journal	February 2016
THE 3D-HST SURVEY: HUBBLE SPACE TELESCOPE WFC3/G141 GRISM SPECTRA, REDSHIFTS, AND EMISSION LINE MEASUREMENTS FOR ∼100,000 GALAXIES Momcheva, Ivelina G.; Brammer, Gabriel B.; van Dokkum, Pieter G. The Astrophysical Journal Supplement Series, Vol. 225, Issue 2 https://doi.org/10.3847/0067-0049/225/2/27	journal	August 2016
Practical Weak-lensing Shear Measurement with Metacalibration Sheldon, Erin S.; Huff, Eric M. The Astrophysical Journal, Vol. 841, Issue 1 https://doi.org/10.3847/1538-4357/aa704b	journal	May 2017
LSST: From Science Drivers to Reference Design and Anticipated Data Products Ivezić, Željko; Kahn, Steven M.; Tyson, J. Anthony The Astrophysical Journal, Vol. 873, Issue 2 https://doi.org/10.3847/1538-4357/ab042c	journal	March 2019
Mitigating Shear-dependent Object Detection Biases with Metacalibration Sheldon, Erin S.; Becker, Matthew R.; MacCrann, Niall The Astrophysical Journal, Vol. 902, Issue 2 https://doi.org/10.3847/1538-4357/abb595	journal	October 2020
Using a Neural Network Classifier to Select Galaxies with the Most Accurate Photometric Redshifts Broussard, Adam; Gawiser, Eric The Astrophysical Journal, Vol. 922, Issue 2 https://doi.org/10.3847/1538-4357/ac2147	journal	November 2021
ADDGALS: Simulated Sky Catalogs for Wide Field Galaxy Surveys Wechsler, Risa H.; DeRose, Joseph; Busha, Michael T. The Astrophysical Journal, Vol. 931, Issue 2 https://doi.org/10.3847/1538-4357/ac5b0a	journal	June 2022
The FMOS-COSMOS Survey of Star-forming Galaxies at z ∼ 1.6. VI. Redshift and Emission-line Catalog and Basic Properties of Star-forming Galaxies Kashino, Daichi; Silverman, John D.; Sanders, David The Astrophysical Journal Supplement Series, Vol. 241, Issue 1 https://doi.org/10.3847/1538-4365/ab06c4	journal	March 2019
Core Cosmology Library: Precision Cosmological Predictions for LSST Chisari, Nora Elisa; Alonso, David; Krause, Elisabeth The Astrophysical Journal Supplement Series, Vol. 242, Issue 1 https://doi.org/10.3847/1538-4365/ab1658	journal	May 2019
The Outer Rim Simulation: A Path to Many-core Supercomputers Heitmann, Katrin; Finkel, Hal; Pope, Adrian The Astrophysical Journal Supplement Series, Vol. 245, Issue 1 https://doi.org/10.3847/1538-4365/ab4da1	journal	November 2019
CosmoDC2: A Synthetic Sky Catalog for Dark Energy Science with LSST Korytov, Danila; Hearin, Andrew; Kovacs, Eve The Astrophysical Journal Supplement Series, Vol. 245, Issue 2 https://doi.org/10.3847/1538-4365/ab510c	journal	December 2019
Photometric Redshifts based on standard SED fitting procedures Bolzonella, Micol; Miralles, Joan-Marc; Pello', Roser arXiv https://doi.org/10.48550/arXiv.astro-ph/0003380	text	January 2000

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