zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field

Abstract

zCOSMOS is a large redshift survey that is being undertaken in the COSMOS field using 600 hours of observation with the VIMOS spectrograph on the 8-m VLT. The survey is designed to characterise the environments of COSMOS galaxies from the 100 kpc scales of galaxy groups up to the 100 Mpc scale of the cosmic web and to produce diagnostic information on galaxies and active galactic nuclei. The zCOSMOS survey consists of two parts: (a) zCOSMOS-bright, a magnitude-limited I-band IAB < 22.5 sample of about 20,000 galaxies with 0.1 < z < 1.2 covering the whole 1.7 deg2 COSMOS ACS field and designed to mimic the parameters of the 2dfGRS; and (b) zCOSMOS-deep, a survey of approximately 10,000 galaxies selected through colour-selection criteria to have 1.4 < z < 3.0, within the central 1 deg2. This paper describes the survey design and the construction of the target catalogues, and briefly outlines the observational program and the data pipeline. In the first observing season, spectra of 1303 zCOSMOS-bright targets and of 977 zCOSMOS-deep targets have been obtained. These are briefly analysed to demonstrate the characteristics that may be expected from zCOSMOS, and particularly zCOSMOS-bright, when it is finally completed between 2008-2009. The power of combining spectroscopic and photometric redshifts is demonstrated, especially in correctly identifying the emission line in single-line spectra and in determining which of the less reliable spectroscopic redshifts are correct and which are incorrect. Our zCOSMOS-deep spectra demonstrate the effectiveness of our selection techniques to isolate high redshift galaxies at 1.4 < z < 3.0 and of VIMOS to measure their redshifts using ultraviolet absorption lines.

24 pages plus 16 figures. Accepted, to appear in the ApJ Supplement COSMOS Special Issue

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• The Lockman-SpReSO project. Description, target selection, observations and preliminary results
• Test of Cosmic Web-feeding Model for Star Formation in Galaxy Clusters in the COSMOS Field
• ScamPy -- A sub-halo clustering & abundance matching based Python interface for painting galaxies on the dark matter halo/sub-halo hierarchy
• Spitzer's View of the Candidate Cluster and Protocluster Catalog (CCPC)
• The MAGPI survey: The interdependence of the mass, star formation rate, and metallicity in galaxies at z~0.3
• Redshift identification of X-ray selected active galactic nuclei in the J1030 field: searching for large-scale structures and high-redshift sources
• Identifying Lyα emitter candidates with Random Forest: learning from galaxies in CANDELS survey
• Stellar Populations in type Ia supernova host galaxies at intermediate-high redshift: Star formation and metallicity enrichment histories
• Constraining Brans-Dicke cosmology with the CSST galaxy clustering spectroscopic survey
• Self-calibrating interloper bias in spectroscopic galaxy clustering surveys
• Revisiting the Impact of Atmospheric Dispersion and Differential Refraction on Widefield Multiobject Spectroscopic Observations. From VLT/VIMOS to Next Generation Instruments
• The radio-loud AGN population at z>~1 in the COSMOS field. I. Selection and Spectral Energy Distributions
• X-ray Selected Narrow-Line Active Galactic Nuclei in the COSMOS Field: Nature of Optically Dull Active Galactic Nuclei
• Properties of IR selected Active Galactic Nuclei
• The relationship of SMBHs and host galaxies at $z<4$ in the deep optical variability-selected AGN sample in the COSMOS field
• Optimizing spectral stacking for 21-cm observations of galaxies: accuracy assessment and symmetrized stacking
• Assessing model-based carbon and oxygen abundance derivation from ultraviolet emission lines in AGNs
• Precise self-calibration of interloper bias in spectroscopic surveys
• Gas properties as a function of environment in the proto-supercluster Hyperion at z ~ 2.45
• The Compilation and Validation of the Spectroscopic Redshift Catalogs for the DESI-COSMOS and DESI-XMMLSS Fields
• Searching for low-redshift faint galaxies with MMT/Hectospec
• A Global Census of Metals in the Universe
• Neutral hydrogen lensing simulations in the Hubble Frontier Fields
• pop-cosmos: Insights from generative modeling of a deep, infrared-selected galaxy population
• Estimating lifetimes of uv-selected massive galaxies at $0.5\le z\le 2.5$ in the cosmos/ultravista field through clustering analyses
• A new approach to finding galaxy groups using Markov Clustering
• CLAP. I. Resolving miscalibration for deep learning-based galaxy photometric redshift estimation
• Blending and obscuration in weak lensing magnification
• Introducing cosmosTNG: simulating galaxy formation with constrained realizations of the COSMOS field
• Dark Energy Survey Year 3 Results: Deep Field Optical + Near-Infrared Images and Catalogue
• Geometrical tests of cosmological models. III. The cosmology-evolution diagram at z=1
• IllustrisTNG and S2COSMOS: possible conflicts in the evolution of neutral gas and dust
• LATIS: A Sample of IGM-selected Protoclusters and Protogroups at $z\sim 2.5$
• Central Concentration of Asymmetric Features in Post-starburst Galaxies at $z\sim 0.8$
• Deep Extragalactic VIsible Legacy Survey (DEVILS): First Data Release Covering The D10 (COSMOS) Region
• Redshift and stellar mass dependence of intrinsic shapes of disc-dominated galaxies from COSMOS observations below $z=1.0$
• LATIS: Comparing Galaxy and IGM Tomography Maps as Tracers of Large-scale Structure and Protoclusters at $z\sim 2.5$
• Measuring galaxy abundance and clustering at high redshift from incomplete spectroscopic data: Tests on mock catalogs
• The COSMOS Wall at z$\sim$0.73: star-forming galaxies and their evolution in different environments
• A Morphological Model to Separate Resolved-Unresolved Sources in the DESI Legacy Surveys: Application in the LS4 Alert Stream
• Echoes from the dark: Galaxy catalog incompleteness in standard siren cosmology
• Euclid preparation: TBD. Cosmic Dawn Survey: evolution of the galaxy stellar mass function across 0.2<z<6.5 measured over 10 square degrees
• Host galaxy and nuclear properties of IR-selected AGNs with and without outflow signatures
• The HST-Hyperion Survey: Companion Fraction and Overdensity in a z ~ 2.5 Proto-supercluster
• Exploring the physical properties of Type II Quasar candidates at intermediate redshifts with CIGALE
• Exploring the X-ray-radio connection for AGN via measurements of the multi-dimensional luminosity function
• A hierarchical clustering method for quantifying satellite abundance
• LATIS Data Release: $\sim 4200$ Spectra of $z\sim 2-3$ Galaxies, Redshifts, and Intergalactic Medium Tomography Maps
• Supermassive Black Holes in Deep Multiwavelength Surveys
• Star formation quenching precedes morphological transformation in COSMOS-WEB's richest galaxy groups
• Gas thermodynamics meets galaxy kinematics: Joint mass measurements for eROSITA galaxy clusters
• Obscured and unobscured X-ray AGNs I: Host galaxy properties
• Catalogs of optically-selected clusters and photometric luminous red galaxies from the Hyper Suprime-Cam Subaru Strategic Program final year dataset
• The gMOSS: the galaxy survey and galaxy populations of the large homogeneous field
• Seeing through the dust: Unraveling near-infrared variability in type 2 active galactic nuclei
• Spectroscopic Surveys: Present
• Photometric Redshift Estimation with Convolutional Neural Networks and Galaxy Images: A Case Study of Resolving Biases in Data-Driven Methods
• A Quantum Genetic Algorithm with application to Cosmological Parameters Estimation
• Large Scale Distribution of Galaxies in The Field HS 47.5-22. II. Observational Data Analysis
• CNN photometric redshifts in the SDSS at $r\le 20$