THE COSMOS2015 CATALOG: EXPLORING THE 1 < z < 6 UNIVERSE WITH HALF A MILLION GALAXIES

By C. Laigle, H. McCracken, O. Ilbert, B. Hsieh, I. Davidzon, P. Capak, G. Hasinger, J. Silverman, C. Pichon, Jean Coupon and 27 more. 2016

764 citations recorded by the source corpus.

We present the COSMOS2015 catalog, which contains precise photometric redshifts and stellar masses for more than half a million objects over the 2deg2 COSMOS field. Including new images from the UltraVISTA-DR2 survey, Y-band images from Subaru/Hyper-Suprime-Cam, and infrared data from the Spitzer Large Area Survey with the Hyper-Suprime-Cam Spitzer legacy program, this near-infrared-selected catalog is highly optimized for the study of galaxy evolution and environments in the early universe. To maximize catalog completeness for bluer objects and at higher redshifts, objects have been detected on a χ2 sum of the and z++ images. The catalog contains objects in the 1.5 deg2 UltraVISTA-DR2 region and objects are detected in the “ultra-deep stripes” (0.62 deg2) at (3σ, 3″, AB magnitude). Through a comparison with the zCOSMOS-bright spectroscopic redshifts, we measure a photometric redshift precision of = 0.007 and a catastrophic failure fraction of %. At , using the unique database of spectroscopic redshifts in COSMOS, we find = 0.021 and . The deepest regions reach a 90% completeness limit of to z = 4. Detailed comparisons of the color distributions, number counts, and clustering show excellent agreement with the literature in the same mass ranges. COSMOS2015 represents a unique, publicly available, valuable resource with which to investigate the evolution of galaxies within their environment back to the earliest stages of the history of the universe. The COSMOS2015 catalog is distributed via anonymous ftp and through the usual astronomical archive systems (CDS, ESO Phase 3, IRSA).

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/ab4973ead9f32717450cdbcb741db2e8cbe1caee

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Citations in the corpus

KiDS-450: cosmological parameter constraints from tomographic weak gravitational lensing (2016, methodology): “We therefore determine the level of luminosity evolution with redshift for a sample of galaxies similar to KiDS-450 using the ‘COSMOS2015’ catalogue (Laigle et al. 2016).”
Low-redshift Lyman continuum leaking galaxies with high [O iii]/[O ii] ratios (2018, background): “For comparison, the stellar masses of the low-z galaxies observed by Hernandez et al. (2018) span a fairly large range with the bulk of the sources between M⋆ ∼ 10 9.5−1010 M⊙ , as found from the catalog of Laigle et al. (2016).”
x-cigale: fitting AGN/galaxy SEDs from X-ray to infrared (2020, background): “Marchesi et al. (2016) matched these X-ray sources with the optical/NIR counterparts in the COSMOS2015 catalog (Laigle et al. 2016) and compiled their spectroscopic information when available.”
Early dark energy does not restore cosmological concordance (2020, methodology): “Regarding possible common systematics, the surveys also differ in their photo-z calibration: KV-450 uses a combined data set comprised of a large number of spectroscopic surveys (Hildebrandt et al. (2020)), while DES-Y1 and HSC-Y1 both use the COSMOS photo-z catalogue (Laigle et al. (2016)).”
Cosmological constraints from cosmic shear two-point correlation functions with HSC survey first-year data (2019, methodology): “They adopted the reweighting method based on the HSC’s five-band photometry and COSMOS 30-band photo-z catalog (Ilbert et al. 2009; Laigle et al. 2016).”
KiDS+VIKING-450: Cosmic shear tomography with optical and infrared data (2018, methodology): “Here we speculate that a significant fraction of high-z outliers that are assigned a low photoz in the COSMOS-2015 catalogue, as reported by Laigle et al. (2016), could artificially increase the S 8 values of DESy1, HSCDR1, and our alternative analysis where we use COSMOS2015.”
KiDS+VIKING-450 and DES-Y1 combined: Cosmology with cosmic shear (2019, methodology): “Article number, page 3 of 8 To compare these approaches to direct spectroscopic determination, which fully decouples the photo-z from the determination of the n(z), H20 considered a DIR estimate of the KV450 redshifts with the help of COSMOS-2015, finding a coherent downward shift in the redshift di”
The Early Data Release of the Dark Energy Spectroscopic Instrument (2023, methodology): “The cool gas galaxy counterparts are selected from the COSMOS2020 catalog ( Weaver et al. 2022 ) .”
The DEIMOS 10K Spectroscopic Survey Catalog of the COSMOS Field (2018, methodology): “Over 2 million galaxies are detected in deep optical images (Ilbert et al. 2009), and 1.2 million in the NIR (Laigle et al. 2016), spanning 75% of the age of the Universe.”
The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release (2017, methodology): “…2007; Elvis et al. 2009; Ilbert et al. 2013; McCracken et al. 2012; Scott et al. 2008; Aretxaga et al. 2011; Smolčić et al. 2012; Miettinen et al. 2015; Civano et al. 2016; Laigle et al. 2016, Capak et al., in prep.) and more than 97 000 optical spectroscopic redshifts (Salvato et al., in prep.”
An ALMA survey of the SCUBA-2 CLS UDS field: physical properties of 707 sub-millimetre galaxies (2019, methodology): “Finally, Brisbin et al. (2017) identify optical counterparts to 97/152 (64 per cent) of ALMA-identified SMGs from a Band 6 (1.2 mm) survey of AzTEC sources using the public COSMOS2015 catalogue (Laigle et al. 2016), which is equivalent to K 24.7, for the deepest parts.”