The Compilation and Validation of the Spectroscopic Redshift Catalogs for the DESI-COSMOS and DESI-XMMLSS Fields

Abstract

Over several dedicated programs that include targets beyond the main cosmological samples, the Dark Energy Spectroscopic Instrument (DESI) collected spectra for 304,970 unique objects in two fields centered on the COSMOS and XMM-LSS fields. In this work, we develop spectroscopic redshift robustness criteria for those spectra, validate these criteria using visual inspection, and provide two custom Value-Added Catalogs with our redshift characterizations. With these criteria, we reliably classify 212,935 galaxies below z < 1.6, 9,713 quasars and 35,222 stars. As a critical element in characterizing the selection function, we provide the description of 70 different algorithms that were used to select these targets from imaging data. To facilitate joint imaging/spectroscopic analyses, we provide row-matched photometry from the Dark Energy Camera, Hyper-Suprime Cam, and public COSMOS2020 photometric catalogs. Finally, we demonstrate example applications of these large catalogs to photometric redshift estimation, cluster finding, and completeness studies.

References in corpus (43)

• Cosmic Star Formation History
• The Cosmic Evolution Survey (COSMOS) -- Overview
• EAZY: A Fast, Public Photometric Redshift Code
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field
• UltraVISTA: a new ultra-deep near-infrared survey in COSMOS
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• Gaia EDR3 view on Galactic globular clusters
• COSMOS2020: A panchromatic view of the Universe to $z\sim 10$ from two complementary catalogs
• Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
• The MOSFIRE Deep Evolution Field (MOSDEF) Survey: Rest-Frame Optical Spectroscopy for ~1500 H-Selected Galaxies at 1.37 < z < 3.8
• The evolution of the galaxy UV luminosity function at redshifts z ~ 8-15 from deep JWST and ground-based near-infrared imaging
• The unWISE Catalog: Two Billion Infrared Sources from Five Years of WISE Imaging
• Third Data Release of the Hyper Suprime-Cam Subaru Strategic Program
• The VIMOS Ultra-Deep Survey: ~10,000 galaxies with spectroscopic redshifts to study galaxy assembly at early epochs 2<z<~6
• The XMM-Newton wide-field survey in the COSMOS field. The point-like X-ray source catalogue
• DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation
• The Spectroscopic Data Processing Pipeline for the Dark Energy Spectroscopic Instrument
• Target Selection and Validation of DESI Luminous Red Galaxies
• AzTEC Millimetre Survey of the COSMOS Field: I. Data Reduction and Source Catalogue
• Target Selection and Validation of DESI Quasars
• DESI 2024 VII: Cosmological Constraints from the Full-Shape Modeling of Clustering Measurements
• Target Selection and Validation of DESI Emission Line Galaxies
• Overview of the DESI Milky Way Survey
• The Target-selection Pipeline for the Dark Energy Spectroscopic Instrument
• Binospec: A Wide-field Imaging Spectrograph for the MMT
• OzDES multifibre spectroscopy for the Dark Energy Survey: Three year results and first data release
• Spectroscopic Confirmation of a Protocluster at $z=3.37$ with a High Fraction of Quiescent Galaxies
• The DESI Survey Validation: Results from Visual Inspection of the Quasar Survey Spectra
• SPIDERS: the spectroscopic follow-up of X-ray selected clusters of galaxies in SDSS-IV
• The Hyper Suprime-Cam SSP Transient Survey in COSMOS: Overview
• DESI Early Data Release Milky Way Survey Value-Added Catalogue
• Propagating sample variance uncertainties in redshift calibration: simulations, theory and application to the COSMOS2015 data
• SPIDERS: An Overview of The Largest Catalogue of Spectroscopically Confirmed X-ray Galaxy Clusters
• Archetype-Based Redshift Estimation for the Dark Energy Spectroscopic Instrument Survey
• DESI Peculiar Velocity Survey -- Fundamental Plane
• Exploring the interaction between the MW and LMC with a large sample of blue horizontal branch stars from the DESI survey
• NOEMA formIng Cluster survEy (NICE): Characterizing eight massive galaxy groups at $1.5<z<4$ in the COSMOS field
• The Merian Survey: Design, Construction, and Characterization of a Filter Set Optimized to Find Dwarf Galaxies and Measure their Dark Matter Halo Properties with Weak Lensing
• DESI Complete Calibration of the Color-Redshift Relation (DC3R2): Results from early DESI data
• High redshift LBGs from deep broadband imaging for future spectroscopic surveys
• A Cohesive Deep Drilling Field Strategy for LSST Cosmology
• Faint, high proper motion star candidates selected from the SDSS and PS1 catalogs