The COSMOS2015 Catalog: Exploring the 1<z<6 Universe with half a million galaxies
C. Laigle, H. J. McCracken, O. Ilbert, B. C. Hsieh, I. Davidzon, P., Capak, G. Hasinger, J. D. Silverman, C. Pichon, J. Coupon, H. Aussel, D. Le, Borgne, K. Caputi, P. Cassata, Y.-Y. Chang, F. Civano, J. Dunlop, J. Fynbo,, J. S. kartaltepe, A. Koekemoer, O. Le Fevre

TL;DR
The COSMOS2015 catalog provides a comprehensive dataset of over half a million galaxies with precise photometric redshifts and stellar masses, enabling detailed studies of galaxy evolution from redshift 1 to 6.
Contribution
This work introduces a highly optimized, multi-wavelength catalog with improved redshift accuracy and completeness, especially for high-redshift and blue objects, based on new infrared imaging data.
Findings
Photometric redshift precision of 0.007 for z<3.
Catastrophic failure rate of 0.5% for low redshift.
Redshift accuracy of 0.021 at 3<z<6.
Abstract
We present the COSMOS2015 catalog which contains precise photometric redshifts and stellar masses for more than half a million objects over the 2deg COSMOS field. Including new images from the UltraVISTA-DR2 survey, -band 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 maximise catalog completeness for bluer objects and at higher redshifts, objects have been detected on a sum of the and images. The catalog contains objects in the 1.5 deg UltraVISTA-DR2 region, and objects are detected in the "ultra-deep stripes" (0.62 deg) at (3,…
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