Optimized Photometric Redshifts for the Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey (CANDELS)

Abstract

We present the first comprehensive release of photometric redshifts (photo-z's) from the Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey (CANDELS) team. We use statistics based upon the Quantile-Quantile (Q--Q) plot to identify biases and signatures of underestimated or overestimated errors in photo-z probability density functions (PDFs) produced by six groups in the collaboration; correcting for these effects makes the resulting PDFs better match the statistical definition of a PDF. After correcting each group's PDF, we explore three methods of combining the different groups' PDFs for a given object into a consensus curve. Two of these methods are based on identifying the minimum f-divergence curve, i.e., the PDF that is closest in aggregate to the other PDFs in a set (analogous to the median of an array of numbers). We demonstrate that these techniques yield improved results using sets of spectroscopic redshifts independent of those used to optimize PDF modifications. The best photo-z PDFs and point estimates are achieved with the minimum f-divergence using the best 4 PDFs for each object (mFDa4) and the Hierarchical Bayesian (HB4) methods, respectively. The HB4 photo-z point estimates produced ${\sigma }_{\mathrm{NMAD}}=0.0227/0.0189$ and $|\Delta z/(1+z)|>0.15$ outlier fraction = 0.067/0.019 for spectroscopic and 3D-HST redshifts, respectively. Finally, we describe the structure and provide guidance for the use of the CANDELS photo-z catalogs, which are available at https://archive.stsci.edu/hlsp/candels.

arXiv comment35 pages, 19 figures, published in ApJ, data available at https://archive.stsci.edu/hlsp/candels

References in corpus (93)

• Stellar population synthesis at the resolution of 2003
• The Dust Content and Opacity of Actively Star-Forming Galaxies
• 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
• Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
• Evolutionary population synthesis: models, analysis of the ingredients and application to high-z galaxies
• EAZY: A Fast, Public Photometric Redshift Code
• Accurate photometric redshifts for the CFHT Legacy Survey calibrated using the VIMOS VLT Deep Survey
• A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field
• The Evolution of the Stellar Mass Functions of Star-Forming and Quiescent Galaxies to z = 4 from the COSMOS/UltraVISTA Survey
• The 2dF Galaxy Redshift Survey: Near Infrared Galaxy Luminosity Functions
• The Star-formation Mass Sequence out to z=2.5
• Spectral Energy Distributions of Hard X-ray selected AGNs in the XMDS Survey
• The DEEP2 Galaxy Redshift Survey: Design, Observations, Data Reduction, and Redshifts
• The 3D-HST Survey: Hubble Space Telescope WFC3/G141 grism spectra, redshifts, and emission line measurements for $\sim 100,000$ galaxies
• The Evolution of the Galaxy Rest-Frame Ultraviolet Luminosity Function Over the First Two Billion Years
• A new photometric technique for the joint selection of star-forming and passive galaxies at 1.4<z<2.5
• The All-wavelength Extended Groth Strip International Survey (AEGIS) Data Sets
• The Chandra Deep Field South: Optical Spectroscopy I
• A Steep Faint-End Slope of the UV Luminosity Function at z~2-3: Implications for the Global Stellar Mass Density and Star Formation in Low Mass Halos
• The Evolution of the Stellar Mass Function of Galaxies from z=4.0 and the First Comprehensive Analysis of its Uncertainties: Evidence for Mass-dependent Evolution
• CANDELS Multi-wavelength Catalogs: Source Detection and Photometry in the GOODS-South Field
• Science Objectives and Early Results of the DEEP2 Redshift Survey
• Galaxy Stellar Mass Functions from ZFOURGE/CANDELS: An Excess of Low-Mass Galaxies Since z=2 and the Rapid Buildup of Quiescent Galaxies
• The MOSFIRE Deep Evolution Field (MOSDEF) Survey: Rest-Frame Optical Spectroscopy for ~1500 H-Selected Galaxies at 1.37 < z < 3.8
• A catalogue of the Chandra Deep Field South with multi-colour classification and photometric redshifts from COMBO-17
• The VIMOS VLT Deep Survey final data release: a spectroscopic sample of 35016 galaxies and AGN out to z~6.7 selected with 17.5<=i_{AB}<=24.7
• A Critical Assessment of Photometric Redshift Methods: A CANDELS Investigation
• The VIMOS Ultra-Deep Survey: ~10,000 galaxies with spectroscopic redshifts to study galaxy assembly at early epochs 2<z<~6
• The Great Observatories Origins Deep Survey. VLT/FORS2 Spectroscopy in the GOODS-South Field: Part III
• The PRIsm MUlti-Object Survey (PRIMUS) I: Survey Overview and Characteristics
• The Relation Between SFR and Stellar Mass for Galaxies at 3.5 $\le z\le$ 6.5 in CANDELS
• CANDELS Multiwavelength catalogs: Source Identification and Photometry in the CANDELS UKIDSS Ultra-Deep Survey Field
• The mass evolution of the first galaxies: stellar mass functions and star formation rates at $4<z<7$ in the CANDELS GOODS-South field
• The Team Keck Treasury Redshift Survey of the GOODS-North Field
• Calibrating Redshift Distributions Beyond Spectroscopic Limits with Cross-Correlations
• Stellar masses from the CANDELS survey: the GOODS-South and UDS fields
• The Great Observatories Origins Deep Survey - VLT/VIMOS Spectroscopy in the GOODS-South Field: Part II
• The Great Observatories Origins Deep Survey. VLT/VIMOS Spectroscopy in the GOODS-South Field
• PHAT: PHoto-z Accuracy Testing
• A Highly Complete Spectroscopic Survey of the GOODS-N Field
• The K20 survey. VII. The spectroscopic catalogue: spectral properties and evolution of the galaxy population
• 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
• CANDELS Multiwavelength Catalogs: Source Identification and Photometry in the CANDELS Extended Groth Strip
• Photometric redshifts from SDSS images using a Convolutional Neural Network
• Photometric redshifts for the SDSS Data Release 12
• The DEEP3 Galaxy Redshift Survey: The Impact of Environment on the Size Evolution of Massive Early-type Galaxies at Intermediate Redshift
• The CANDELS/SHARDS multi-wavelength catalog in GOODS-N: Photometry, Photometric Redshifts, Stellar Masses, Emission line fluxes and Star Formation Rates
• Spectroscopic Observations of Lyman-Break Galaxies at Redshift ~ 4, 5 and 6 in the GOODS-South Field
• Photometric redshifts and selection of high redshift galaxies in the NTT and Hubble Deep Fields
• The FMOS-COSMOS survey of star-forming galaxies at z~1.6 III. Survey design, performance, and sample characteristics
• High velocity outflows from young star-forming galaxies in the UKIDSS Ultra-Deep Survey
• CANDELS Multiwavelength Catalogs: Source Identification and Photometry in the CANDELS COSMOS Survey Field
• The MOSDEF Survey: Dissecting the star-formation rate vs. stellar mass relation using H$\alpha$ and H$\beta$ emission lines at z ~ 2
• The Extended Chandra Deep Field-South Survey: Optical spectroscopy of faint X-ray sources with the VLT and Keck
• SHARDS: an optical spectro-photometric survey of distant galaxies
• 531 new spectroscopic redshifts from the CDFS and a test on the cosmological relevance of the GOODS-South field
• The VANDELS ESO public spectroscopic survey
• A Population of Massive and Evolved Galaxies at z$\ga$5
• The ASTRODEEP Frontier Fields Catalogues: II - Photometric redshifts and rest-frame properties in Abell-2744 and MACS-J0416
• The Arizona CDFS Environment Survey (ACES): A Magellan/IMACS Spectroscopic Survey of the Chandra Deep Field South
• A blind test of photometric redshift prediction
• The DEEP3 Galaxy Redshift Survey: Keck/DEIMOS Spectroscopy in the GOODS-N Field
• GMASS ultradeep spectroscopy of galaxies at z~2 - VII. Sample selection and spectroscopy
• Photometric Redshifts for Next-Generation Surveys
• Optical Spectroscopy of X-ray sources in the Extended Chandra Deep Field South
• Spectroscopic Needs for Imaging Dark Energy Experiments: Photometric Redshift Training and Calibration
• The Fundamental Plane of Field Early Type Galaxies at z=1
• Photometric redshifts for the next generation of deep radio continuum surveys - I: Template fitting
• The Origin of Line Emission in Massive z~2.3 Galaxies: Evidence for Cosmic Downsizing of AGN Host Galaxies
• Evaluation of probabilistic photometric redshift estimation approaches for The Rubin Observatory Legacy Survey of Space and Time (LSST)
• Self-Supervised Representation Learning for Astronomical Images
• The Photometric Redshift Distribution and Evolutionary Properties of Galaxies up to z= 4.5 in the Field of the Quasar BR1202-0725
• A blind test of photometric redshifts on ground-based data
• A WFC3 Grism Emission Line Redshift Catalog in the GOODS-South Field
• Emission-Line Galaxies from the Hubble Space Telescope Probing Evolution and Reionization Spectroscopically (PEARS) Grism Survey. II: The Complete Sample
• Photometric redshifts for the next generation of deep radio continuum surveys - II. Gaussian processes and hybrid estimates
• Testing Diagnostics of Nuclear Activity and Star Formation in Galaxies at z>1
• A spectroscopic sample of massive, evolved z~2 galaxies: Implications for the evolution of the mass-size relation
• The ASTRODEEP-GS43 catalogue: new photometry and redshifts for the CANDELS GOODS-South field
• Recovering galaxy stellar population properties from broad-band spectral energy distribution fitting II. The case with unknown redshift
• Optical Spectroscopy of Distant Red Galaxies
• The Team Keck Redshift Survey 2: MOSFIRE Spectroscopy of the GOODS-North Field
• Photometric Redshifts from SDSS Images with an Interpretable Deep Capsule Network
• The Subaru-XMM-Newton Deep Survey (SXDS) VIII.: Multi-wavelength Identification, Optical/NIR Spectroscopic Properties, and Photometric Redshifts of X-ray Sources
• Leveraging 3D-HST Grism Redshifts to Quantify Photometric Redshift Performance
• A Cepheid Distance to NGC 4603 in Centaurus
• Searching for comets on the World Wide Web: The orbit of 17P/Holmes from the behavior of photographers
• Hybrid photometric redshifts for sources in the COSMOS and XMM-LSS fields
• Bayesian hierarchical modelling of the ${\mathrm{M}}_{\star }$-SFR relation from 1<z<6 in ASTRODEEP
• Deep ugrizY Imaging and DEEP2/3 Spectroscopy: A Photometric Redshift Testbed for LSST and Public Release of Data from the DEEP3 Galaxy Redshift Survey

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• CEERS Key Paper III: The Diversity of Galaxy Structure and Morphology at z=3-9 with JWST
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• On unveiling Buried Nuclei with JWST: a technique for hunting the most obscured galaxy nuclei from local to high redshift
• Galaxy Zoo JWST: Up to 75% of discs are featureless at $3<z<7$
• Identifying Lyα emitter candidates with Random Forest: learning from galaxies in CANDELS survey
• CLAP. I. Resolving miscalibration for deep learning-based galaxy photometric redshift estimation
• Improved SED-Fitting Assumptions Result in Inside-Out Quenching at $z\sim 0.5$ and Quenching at All Radii Simultaneously at $z\sim 1$
• Overdense fireworks in GOODS-N: Unveiling a record number of massive dusty star forming galaxies at z$\sim$5.2 with the N2CLS
• Euclid preparation: TBD. Cosmic Dawn Survey: evolution of the galaxy stellar mass function across 0.2<z<6.5 measured over 10 square degrees
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