Testing the accuracy of 3D-HST photometric redshift estimates as reference samples for deep weak lensing studies

Abstract

Accurate weak lensing mass estimates of clusters are needed in order to calibrate mass proxies for the cosmological exploitation of galaxy cluster surveys. Such measurements require accurate knowledge of the redshift distribution of the weak lensing source galaxies. In this context, we investigate the accuracy of photometric redshifts (photo-$z$s) computed by the 3D-HST team for the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey fields, which provide a relevant photometric reference data set for deep weak lensing studies. Through the comparison to spectroscopic redshifts and photo-$z$s based on very deep data from the Hubble Ultra Deep Field, we identify catastrophic redshift outliers in the 3D-HST/CANDELS catalogue. These would significantly bias weak lensing results if not accounted for. We investigate the cause of these outliers and demonstrate that the interpolation of spectral energy distribution (SED) templates and a well-selected combination of photometric data can reduce the net impact for weak lensing studies.

17 pages, 14 figures, matches the version accepted for publication in MNRAS

References in corpus (70)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Stellar population synthesis at the resolution of 2003
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics
• Evolutionary population synthesis: models, analysis of the ingredients and application to high-z galaxies
• EAZY: A Fast, Public Photometric Redshift Code
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• Bayesian photometric redshift estimation
• Cosmological Parameters from Observations of Galaxy Clusters
• The Mass Function of an X-Ray Flux-Limited Sample of Galaxy Clusters
• The Hubble Deep Field: Observations, Data Reduction, and Galaxy Photometry
• KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing
• 3D-HST WFC3-selected Photometric Catalogs in the Five CANDELS/3D-HST Fields: Photometry, Photometric Redshifts and Stellar Masses
• The Hubble Ultra Deep Field
• The MUSE second-generation VLT instrument
• The 3D-HST Survey: Hubble Space Telescope WFC3/G141 grism spectra, redshifts, and emission line measurements for $\sim 100,000$ galaxies
• CFHTLenS: The Canada-France-Hawaii Telescope Lensing Survey
• Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the 2500-square-degree SPT-SZ survey
• 3D-HST: A wide-field grism spectroscopic survey with the Hubble Space Telescope
• UV Luminosity Functions from 132 z~7 and z~8 Lyman-Break Galaxies in the ultra-deep HUDF09 and wide-area ERS WFC3/IR Observations
• Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data
• The Abundance of Star-Forming Galaxies in the Redshift Range 8.5 to 12: New Results from the 2012 Hubble Ultra Deep Field Campaign
• The NEWFIRM Medium-band Survey: Photometric Catalogs, Redshifts and the Bimodal Color Distribution of Galaxies out to z~3
• Cosmological Constraints from the SDSS maxBCG Cluster Catalog
• Galaxies in the Hubble Ultra Deep Field: I. Detection, Multiband Photometry, Photometric Redshifts, and Morphology
• The Kilo-Degree Survey
• The Canadian Cluster Comparison Project: detailed study of systematics and updated weak lensing masses
• Evidence for the accelerated expansion of the Universe from weak lensing tomography with COSMOS
• Cluster Cosmology Constraints from the 2500 deg${}^2$ SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope
• A universal model for halo concentrations
• KiDS+VIKING-450: Cosmic shear tomography with optical+infrared data
• Photometric Redshifts for Hyper Suprime-Cam Subaru Strategic Program Data Release 1
• CANDELS Multiwavelength catalogs: Source Identification and Photometry in the CANDELS UKIDSS Ultra-Deep Survey Field
• GaBoDS: The Garching-Bonn Deep Survey; IV. Methods for the Image reduction of multi-chip Cameras
• A Weak Lensing Study of X-ray Groups in the COSMOS survey: Form and Evolution of the Mass-Luminosity Relation
• The CANADA-FRANCE REDSHIFT SURVEY I: Introduction to the Survey, Photometric Catalogs and Surface Brightness Selection Effects
• PHAT: PHoto-z Accuracy Testing
• Cosmology and Astrophysics from Relaxed Galaxy Clusters II: Cosmological Constraints
• z~7 Galaxies in the HUDF: First Epoch WFC3/IR Results
• KiDS+GAMA: Cosmology constraints from a joint analysis of cosmic shear, galaxy-galaxy lensing and angular clustering
• Dark Energy Survey Year 1 Results: Weak Lensing Mass Calibration of redMaPPer Galaxy Clusters
• Robust Weak-lensing Mass Calibration of Planck Galaxy Clusters
• Structure and Morphologies of z~7-8 Galaxies from ultra-deep WFC3/IR Imaging of the HUDF
• The MUSE 3D view of the Hubble Deep Field South
• UVUDF: Ultraviolet Through Near-infrared Catalog and Photometric Redshifts of Galaxies in the Hubble Ultra Deep Field
• The MUSE Hubble Ultra Deep Field Survey: II. Spectroscopic redshifts and comparisons to color selections of high-redshift galaxies
• The 2012 Hubble Ultra Deep Field (UDF12): Observational Overview
• MoMaF : The Mock Map Facility
• LoCuSS: Weak-lensing mass calibration of galaxy clusters
• THELI -- Convenient reduction of any optical, near- and mid-infrared imaging data
• CFHTLenS tomographic weak lensing: Quantifying accurate redshift distributions
• Cluster Mass Calibration at High Redshift: HST Weak Lensing Analysis of 13 Distant Galaxy Clusters from the South Pole Telescope Sunyaev-Zel'dovich Survey
• Scaling Relations and Overabundance of Massive Clusters at z>~1 from Weak-Lensing Studies with HST
• LoCuSS: The Sunyaev-Zel'dovich Effect and Weak Lensing Mass Scaling Relation
• Cosmology and astrophysics from relaxed galaxy clusters - IV: Robustly calibrating hydrostatic masses with weak lensing
• Cosmic Shear Results from the Deep Lens Survey - II: Full Cosmological Parameter Constraints from Tomography
• Survey geometry and the internal consistency of recent cosmic shear measurements
• Sunyaev-Zel'dovich Effect and X-ray Scaling Relations from Weak-Lensing Mass Calibration of 32 SPT Selected Galaxy Clusters
• Optimal filter systems for photometric redshift estimation
• UVUDF: Ultraviolet Imaging of the Hubble Ultradeep Field with Wide-field Camera 3
• Using neural networks to estimate redshift distributions. An application to CFHTLenS
• THE CANADA-FRANCE REDSHIFT SURVEY V: Global Properties of the Sample
• HICOSMO - Cosmology with a complete sample of galaxy clusters: II. Cosmological results
• A Unified Analysis of Four Cosmic Shear Surveys
• Bayesian photometric redshifts with empirical training sets
• The mass-L_x relation for moderate luminosity X-ray clusters
• The MUSE Hubble Ultra Deep Field Survey: III. Testing photometric redshifts to 30th magnitude
• Weak Lensing Analysis of SPT selected Galaxy Clusters using Dark Energy Survey Science Verification Data
• XMM-Newton X-ray and HST weak gravitational lensing study of the extremely X-ray luminous galaxy cluster ClJ120958.9+495352 ($z=0.902$)

Cited by in corpus (9)

• The eROSITA Final Equatorial-Depth Survey (eFEDS): X-ray Observable-to-Mass-and-Redshift Relations of Galaxy Clusters and Groups with Weak-Lensing Mass Calibration from the Hyper Suprime-Cam Subaru Strategic Program Survey
• Mass calibration of distant SPT galaxy clusters through expanded weak lensing follow-up observations with HST, VLT & Gemini-South
• Constraining the masses of high-redshift clusters with weak lensing: Revised shape calibration testing for the impact of stronger shears and increased blending
• Extending empirical constraints on the SZ-mass scaling relation to higher redshifts via HST weak lensing measurements of nine clusters from the SPT-SZ survey at $z\gtrsim 1$
• The PAU Survey: narrowband photometric redshifts using Gaussian processes
• X-ray and optical analysis of the distant, merging double cluster SPT-CLJ2228-5828, its gas bridge, and shock front
• Constraints on the normal branch of DGP gravity from SPT galaxy clusters with DES and HST weak-lensing mass calibration and from Planck PR4 CMB anisotropies
• Non-Sequential Neural Network for Simultaneous, Consistent Classification and Photometric Redshifts of OTELO Galaxies
• Euclid: Early Release Observations. Weak gravitational lensing analysis of Abell 2390