Galaxies in the Hubble Ultra Deep Field: I. Detection, Multiband Photometry, Photometric Redshifts, and Morphology

Abstract

We present aperture-matched PSF-corrected BVi'z'JH photometry and Bayesian photometric redshifts (BPZ) for objects detected in the Hubble Ultra Deep Field (UDF), 8,042 of which are detected at the 10-sigma level (e.g., i'<29.01 or z'<28.43). Most of our objects are defined identically to those in the public STScI catalogs, enabling straightforward object-by-object comparison. We have combined detections from i', z', J+H, and B+V+i'+z' images into a single comprehensive segmentation map. Using a new program called SExSeg we are able to force this segmentation map into SExtractor for photometric analysis. The resulting photometry is corrected for the wider NIC3 PSFs using our ColorPro software. We also correct for the ACS z'-band PSF halo. The NIC3 magnitudes are found to be too faint relative to the ACS fluxes. Based on BPZ SED fits to objects of know spectroscopic redshift, we derived corrections of -0.30 +/- 0.03 mag in J and -0.18 +/- 0.04 mag in H. The offsets appear to be supported by a recent recalibration of the UDF NIC3 images combined with non-linearity measured in NICMOS itself. The UDF reveals a large population of faint blue galaxies (presumably young starbursts), bluer than those observed in the original Hubble Deep Fields (HDF). To accommodate these galaxies, we have added two new starburst templates to the SED library used in previous BPZ papers. The resulting photometric redshifts are accurate to within 0.04 * 1+z_spec out to z < 6. Finally, we measure galaxy morphology, including Sersic index and asymmetry. Our full catalog, software packages, and more are available at http://adcam.pha.jhu.edu/~coe/UDF/ (abridged)

Accepted by AJ. 82 pages, 35 figures, 10 tables. At http://adcam.pha.jhu.edu/~coe/UDF/ you can find: full-resolution versions of the paper (color; B&W compact); our full catalogs and segmentation map; our SExSeg & ColorPro software packages; a clickable color image map of the UDF

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• Observational Aspects of Galactic Accretion at Redshift 3.3
• A bottom-up search for Lyman-continuum leakage in the Hubble Ultra Deep Field
• A double-peaked Lyman-$\alpha$ emitter with a strong blue peak multiply imaged by the galaxy cluster RXC J0018.5+1626
• Galaxy bias from galaxy-galaxy lensing in the DES Science Verification Data
• Model-independent and model-based local lensing properties of CL0024+1654 from multiply-imaged galaxies
• An Extensive Photometric Catalog of CALIFA Galaxies
• Galaxy evolution by color-log(n) type since redshift unity in the Hubble Ultra Deep Field
• TOPz: Photometric redshifts for J-PAS
• The importance of secondary halos for strong lensing in massive galaxy clusters across redshift
• Spectro-Imaging Forward Model of Red and Blue Galaxies
• The Wavelength Dependence of High-Redshift Galaxy Structure in the Rest-Frame Ultraviolet
• Strong lensing in RX J1347.5-1145 revisited
• Euclid Preparation XXXIII. Characterization of convolutional neural networks for the identification of galaxy-galaxy strong lensing events
• The UV luminosity function at 0.6 < z < 1 from UVCANDELS
• The Clusters Hiding in Plain Sight (CHiPS) survey: Complete sample of extreme BCG clusters
• K-CLASH: spatially-resolving star-forming galaxies in field and cluster environments at $z\approx 0.2$-$0.6$
• GRB 070707: the first short gamma-ray burst observed by INTEGRAL
• The DEEP2 Galaxy Redshift Survey: Redshift Identification of Single-Line Emission Galaxies
• Testing the accuracy of 3D-HST photometric redshift estimates as reference samples for deep weak lensing studies
• RELICS: A Very Large (${\theta }_E\sim 40"$) Cluster Lens -- RXC J0032.1+1808
• Next Generation Virgo Cluster Survey. XXI. The weak lensing masses of the CFHTLS and NGVS RedGOLD galaxy clusters and calibration of the optical richness
• High redshift galaxies in the ALHAMBRA survey: I. selection method and number counts based on redshift PDFs
• GLACiAR, an open-source python tool for simulations of source recovery and completeness in galaxy surveys
• Do satellite galaxies trace matter in galaxy clusters?
• Measuring the surface mass density ellipticity of redMaPPer galaxy clusters using weak-lensing
• Cluster-Cluster Lensing and the Case of Abell 383
• Colour jumps across the spiral arms of Hubble Ultra Deep Field galaxies
• ${\mu }_{\star }$ Masses: Weak Lensing Calibration of the Dark Energy Survey Year 1 redMaPPer Clusters using Stellar Masses
• A model for galaxy-galaxy strong lensing statistics in surveys
• Classification of Extremely Red Objects in the Hubble Ultra Deep Field
• Accuracy of photometric redshifts for future weak lensing surveys from space
• The ALHAMBRA survey : Estimation of the clustering signal encoded in the cosmic variance
• Recovering the real-space correlation function from photometric redshift surveys
• J-NEP: 60-band photometry and photometric redshifts for the James Webb Space Telescope North Ecliptic Pole Time-Domain Field
• Pitch angles of distant spiral galaxies
• A Systematic Search for Lensed High-Redshift Galaxies in HST Images of MACS Clusters
• Testing the gravitational lensing explanation for the MgII problem in GRBs
• Close galaxy pairs with accurate photometric redshifts
• Disc scalelengths out to redshift 5.8
• The 2-degree Field Lensing Survey: photometric redshifts from a large new training sample to r<19.5
• Dark Energy Survey Year 1 Results: Wide field mass maps via forward fitting in harmonic space
• The WIRCam Ultra Deep Survey (WUDS) I. Survey overview and UV luminosity functions at z~5 and z~6
• KiDS-1000: Weak lensing and intrinsic alignment around luminous red galaxies
• KiDS+VIKING-450: An internal-consistency test for cosmic shear tomography with a colour-based split of source galaxies
• Machine learning synthetic spectra for probabilistic redshift estimation: SYTH-Z
• RCS2 J232727.6-020437: An Efficient Cosmic Telescope at $z=0.6986$
• MIFAL: fully automated Multiple-Image Finder ALgorithm for strong-lens modelling -- proof of concept
• Tightening weak lensing constraints on the ellipticity of galaxy-scale dark matter haloes
• On the weak lensing masses of a new sample of galaxy groups
• Accurate PSF-matched photometry and photometric redshifts for the Extreme Deep Field with the Chebyshev-Fourier functions
• Star Formation In The Cluster Merger DLSCL J0916.2+2953
• Photo-z-SQL: integrated, flexible photometric redshift computation in a database
• A search for transients in the Reionization Lensing Cluster Survey (RELICS): Three new supernovae
• Color, 3D simulated images with shapelets
• Photo-z Quality Cuts and their Effect on the Measured Galaxy Clustering
• SYNMAG Photometry: A Fast Tool for Catalog-Level Matched Colors of Extended Sources
• Dark Matter Distribution of Four Low-z Clusters of Galaxies
• Automated selection and characterization of emission-line sources in ACS WFC grism data
• Radial Distribution of Near-UV Flux in Disc Galaxies in the range 0<z<1
• On Weak Lensing Shape Noise
• Giga-z: A 100,000 Object Superconducting Spectrophotometer for LSST Follow-up
• A search for Population III galaxies in CLASH. I. Singly-imaged candidates at high redshift
• The catalog-to-cosmology framework for weak lensing and galaxy clustering for LSST
• Halo shapes constrained from a pure sample of central galaxies in KiDS-1000
• On the characteristics of tidal structures of interacting galaxies
• Observational determination of the galaxy bias from cosmic variance with a random pointing survey: Clustering of z~2 galaxies from Hubble's BoRG survey
• Optimising Spectroscopic and Photometric Galaxy Surveys: Efficient Target Selection and Survey Strategy
• HUDF 1619 - a candidate polar-ring galaxy in the Hubble Ultra Deep Field
• Photometric redshift estimation of strongly lensed galaxies
• Gaussian Mixture Models for Blended Photometric Redshifts
• Learning Spectral Templates for Photometric Redshift Estimation from Broadband Photometry
• The PAU Survey: Close galaxy pairs identification and analysis
• The dark matter halo masses of elliptical galaxies as a function of observationally robust quantities
• Selecting background galaxies in weak-lensing analysis of galaxy clusters
• Hawaii Two-0: High-redshift galaxy clustering and bias
• Edge-on galaxies in the Hubble Ultra Deep Field
• A Strong-Lensing Model for the WMDF JWST/GTO Very Rich Cluster Abell 1489
• Assembling a RELIC at Redshift 1: Spectroscopic Observations of Galaxies in the RELICS Cluster SPT-CLJ0615-5746
• The analysis of effective galaxies number count for Chinese Space Station Optical Survey(CSS-OS) by image simulation
• A spectroscopically confirmed z=1.327 galaxy-scale deflector magnifying a z~8 Lyman-Break galaxy in the Brightest of Reionizing Galaxies survey
• A Measurement of The Faint Source Correlation Function in the GOODS and UDF Survey
• How Future Space-Based Weak Lensing Surveys Might Obtain Photometric Redshifts Independently
• Strong Lensing Analysis of the Galaxy Cluster MACS J1319.9+7003 and the Discovery of a Shell Galaxy
• Deep CFHT Y-band imaging of VVDS-F22 field: I. data products and photometric redshifts
• Moving Objects in the Hubble Ultra Deep Field
• Probing gravity with the DES-CMASS sample and BOSS spectroscopy
• Decadal Variability Survey in MACSJ1149
• The Hawaii SCUBA-2 Lensing Cluster Survey: Radio-detected Submillimeter Galaxies in the HST Frontier Fields
• Exploring the spatially-resolved capabilities of the J-PAS survey with Py2DJPAS
• Blending effects on shear measurement synergy between Euclid-like and LSST-like surveys
• Deep lensing with a twist: E and B modes in a field with multiple lenses
• Galaxy-galaxy lensing with the DES-CMASS catalogue: measurement and constraints on the galaxy-matter cross-correlation
• A novel analysis of contamination in Lyman-break galaxy samples at $\mathbf{z}\sim 6-8$: spatial correlation with intermediate-redshift galaxies at $\mathbf{z}\sim 1.3-2$
• The Impact of Tomographic Redshift Bin Width Errors on Cosmological Probes
• Lensing Without Borders. I. A Blind Comparison of the Amplitude of Galaxy-Galaxy Lensing Between Independent Imaging Surveys
• Chasing the peak: optimal statistics for weak shear analyses
• AMICO galaxy clusters in KiDS-DR3: the impact of estimator statistics on the luminosity-mass scaling relation
• Photometric redshifts for quasars from WISE-PS1-STRM
• Possible Ongoing Merger Discovered by Photometry and Spectroscopy in the Field of the Galaxy Cluster PLCK G165.7+67.0