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2026ApJS..282...62B - Astrophys. J., Suppl. Ser., 282, 62 (2026/February-0)

Dark Energy Survey Year 6 Results: Photometric Dataset for Cosmology.

BECHTOL K., SEVILLA-NOARBE I., DRLICA-WAGNER A., YANNY B., GRUENDL R.A., SHELDON E., RYKOFF E.S., DE VICENTE J., ADAMOW M., ANBAJAGANE D., BECKER M.R., BERNSTEIN G.M., CARNERO ROSELL A., GSCHWEND J., GORSUCH M., HARTLEY W.G., JARVIS M., JELTEMA T., KRON R., MANNING T.A., O'DONNELL J., PIERES A., RODRIGUEZ-MONROY M., SANCHEZ CID D., TABBUTT M., TAN C.Y., TORIBIO SAN CIPRIANO L., TUCKER D.L., WEAVERDYCK N., YAMAMOTO M., ABBOTT T.M.C., AGUENA M., ALARCON A., ALLAM S., AMON A., ANDRADE-OLIVEIRA F., AVILA S., BERNARDINELLI P.H., BERTIN E., BLAZEK J., BROOKS D., BURKE D.L., CARRETERO J., CASTANDER F.J., CAWTHON R., CHANG C., CHOI A., CONSELICE C., COSTANZI M., CROCCE M., DA COSTA L.N., DAVIS T.M., DESAI S., DIEHL H.T., DODELSON S., DOEL P., DOUX C., FERTE A., FLAUGHER B., FOSALBA P., FRIEMAN J., GARCIA-BELLIDO J., GATTI M., GAZTANAGA E., GIANNINI G., GRUEN D., GUTIERREZ G., HERNER K., HINTON S.R., HOLLOWOOD D.L., HONSCHEID K., HUTERER D., JEFFREY N., KRAUSE E., KUEHN K., LAHAV O., LEE S., LIDMAN C., LIMA M., LIN H., MARSHALL J.L., MENA-FERNANDEZ J., MIQUEL R., MOHR J.J., MUIR J., MYLES J., OGANDO R.L.C., PALMESE A., PLAZAS MALAGON A.A., PORREDON A., PRAT J., RAVERI M., ROMER A.K., ROODMAN A., SAMUROFF S., SANCHEZ E., SCARPINE V., SMITH M., SOARES-SANTOS M., SUCHYTA E., TARLE G., TROXEL M.A., VIKRAM V., WALKER A.R., WELLER J., WISEMAN P., ZHANG Y. (The DES Collaboration)

Abstract (from CDS):

We describe the photometric dataset assembled from the full 6 yr of observations by the Dark Energy Survey (DES) in support of static-sky cosmology analyses. DES Y6 Gold is a curated dataset derived from DES Data Release 2 (DR2) that incorporates improved measurement, photometric calibration, object classification and value-added information. Y6 Gold comprises nearly 5000 deg2 of grizY imaging in the south Galactic cap and includes 669 million objects with a depth of iAB ∼ 23.4 mag at a signal-to-noise ratio ∼ 10 for extended objects and a top-of-the-atmosphere photometric uniformity <2 mmag. Y6 Gold augments DES DR2 with simultaneous fits to multiepoch photometry for more robust galaxy shapes, colors, and photometric redshift estimates. Y6 Gold features improved morphological star-galaxy classification with an efficiency of 98.6% and a contamination of 0.8% for galaxies with 17.5 < iAB < 22.5. Additionally, it includes per-object quality information, and accompanying maps of the footprint coverage, masked regions, imaging depth, survey conditions, and astrophysical foregrounds that are used for cosmology analyses. After quality selections, benchmark samples contain 448 million galaxies and 120 million stars. This publication is complemented by data access and documentation.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Sky surveys - Observational cosmology - Dark energy - Astronomy image processing - Catalogs

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 25

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