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The COSMOS2015 Catalog: Exploring the 1 < z < 6 Universe with Half a Million Galaxies

Laigle, C. and Capak, P. and Scoville, N. (2016) The COSMOS2015 Catalog: Exploring the 1 < z < 6 Universe with Half a Million Galaxies. Astrophysical Journal Supplement Series, 224 (2). Art. No. 24. ISSN 0067-0049. http://resolver.caltech.edu/CaltechAUTHORS:20160919-104756275

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Abstract

We present the COSMOS2015 catalog, which contains precise photometric redshifts and stellar masses for more than half a million objects over the 2deg^2 COSMOS field. Including new YJHK_s 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 χ^2 sum of the YJHK_s and z^(++) images. The catalog contains ~6 x 10^5 objects in the 1.5 deg^2 UltraVISTA-DR2 region and ~ 1.5 x 10^5 objects are detected in the "ultra-deep stripes" (0.62 deg^2) at K_s ⩽ 24.7 (3σ, 3", AB magnitude). Through a comparison with the zCOSMOS-bright spectroscopic redshifts, we measure a photometric redshift precision of σ_Δz/(1+_s) = 0.007 and a catastrophic failure fraction of η = 0.5%. At 3 < z < 6, using the unique database of spectroscopic redshifts in COSMOS, we find σ_Δz/(1+z_s) = 0.021 and η = 13.2%. The deepest regions reach a 90% completeness limit of 10^10 M_⊙ 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).


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.3847/0067-0049/224/2/24DOIArticle
http://iopscience.iop.org/article/10.3847/0067-0049/224/2/24PublisherArticle
http://arxiv.org/abs/1604.02350arXivDiscussion Paper
ORCID:
AuthorORCID
Scoville, N.0000-0002-0438-3323
Additional Information:© 2016 The American Astronomical Society. Received 2015 September 30; accepted 2016 February 23; published 2016 June 8. C.L. is supported by the ILP LABEX (under reference ANR-10-LABX-63 and ANR-11-IDEX-0004-02). This work is partially supported by the Spin(e) grants ANR-13-BS05-0005 of the French Agence Nationale de la Recherche. H.J.M.C.C. acknowledges financial support form the "Programme national cosmologie et galaxies" (PNCG). O.I. acknowledges the funding of the French Agence Nationale de la Recherche for the project "SAGACE". J.D.S. is supported by JSPS KAKENHI grant No. 26400221, the World Premier International Research Center Initiative (WPI), MEXT, Japan and by CREST, JST. B.M.J. and J.P.U.F. acknowledge support from the ERC-StG grant EGGS-278202. The Dark Cosmology Centre is funded by the DNRF. S.T. and M.S. acknowledge support from the ERC Consolidator Grant funding scheme (project ConTExt, grant No. 648179). This research is also partly supported by the Centre National dEtudes Spatiales (CNES). This work is based on data products from observations made with ESO Telescopes at the La Silla Paranal Observatory under ESO programme ID 179.A-2005 and on data products produced by TERAPIX and the Cambridge Astronomy Survey Unit on behalf of the UltraVISTA consortium. V.S. acknowledges the European Union's Seventh Framework program under grant agreement 337595.
Group:COSMOS, SPLASH
Funders:
Funding AgencyGrant Number
Agence Nationale de la Recherche (ANR)ANR-10-LABX-63
Agence Nationale de la Recherche (ANR)ANR-11-IDEX-0004-02
Agence Nationale de la Recherche (ANR)ANR-13-BS05-0005
Programme National Cosmologie et Galaxies (PNCG)UNSPECIFIED
Agence Nationale de la Recherche (ANR) SAGACEUNSPECIFIED
Japan Society for the Promotion of Science (JSPS) KAKENHI26400221
World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan UNSPECIFIED
Japan Science and Technology Agency (JST) CRESTUNSPECIFIED
European Research Council (ERC)278202
Danish National Research Foundation (DNRF)UNSPECIFIED
European Research Council (ERC)648179
Centre National dEtudes Spatiales (CNES)UNSPECIFIED
European Research Council (European Union)337595
Subject Keywords:catalogs; galaxies: evolution; galaxies: high-redshift; galaxies: photometry; methods: observational; techniques: photometric
Record Number:CaltechAUTHORS:20160919-104756275
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160919-104756275
Official Citation:C. Laigle et al 2016 ApJS 224 24
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70427
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:19 Sep 2016 20:41
Last Modified:01 Jun 2017 19:15

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