CosmoDC2: Mock galaxy catalog from Rubin sky simulations

CosmoDC2 is a large, mock galaxy catalog originally designed to support precision dark energy surveys with the Vera C. Rubin Observatory. The catalog is based on a trillion-particle, (4.225 Gpc)^3 box cosmological N-body simulation, the Outer Rim run. For the mock catalog generation, a new hybrid technique is used that combines data-driven empirical approaches with semi-analytical galaxy modeling. The unabridged version of the catalog (with table name cosmodc2mockv1_new) has been optimized to make searches with constraints on stellar mass and redshift fast. This dataset or service is made available by the Infrared Science Archive (IRSA) at IPAC, which is operated by the California Institute of Technology under contract with the National Aeronautics and Space Administration.

CosmoDC2是一款大型模拟星系星表，最初专为支持维拉·C·鲁宾天文台（Vera C. Rubin Observatory）开展的精密暗能量巡天项目而设计。该星表基于包含万亿粒子、体积为(4.225吉秒差距(Gpc))^3的立方宇宙学N体模拟项目Outer Rim run构建。在该模拟星表的生成流程中，研究人员采用了一种全新的混合技术，将数据驱动的经验方法与半解析星系建模手段相结合。该星表的完整版（表名为cosmodc2mockv1_new）已针对恒星质量与红移约束下的快速检索进行了优化。本数据集及相关服务由IPAC下属的红外科学档案馆（Infrared Science Archive, IRSA）提供，IPAC由加州理工学院受美国国家航空航天局（National Aeronautics and Space Administration）合同委托运营。