AbacusSummit Halo Light Cone Catalogs

This is a set of halo light cone catalogs from the AbacusSummit suite of cosmological N-body simulations (abacussummit.readthedocs.io/). They are a "value-added" data product provided by post-processing the simulation output. The main application of the halo light cone catalogs is the construction of realistic mock galaxy catalogues and weak lensing maps on the sky. The algorithm (described in Hadzhiyska et al. 2021) associates CompaSO halos from 29 redshift epochs spanning z = 0.1-2.5 with their particles at the time of light-cone crossing. It then records the halo and particle information into an easily accessible product, which can be read with the CompaSO reader. The 25 base resolution boxes at fiducial cosmology have a halo light cone catalog covering an octant of the sky to z approx 0.8 and about 2000 deg2 extending to z approx 2.4. The huge boxes provide light cone information of the full sky until z approx 2.18 and extend further towards the corners of the box (available until z = 2.25). Galaxy mock catalogs on the sky can be generated easily though the AbacusHOD script providing an extended HOD framework (see Yuan et al. 2021, for details), which has been modified to work with the halo light cone catalogs. The available tracers are luminous red galaxies (LRGs), emission-line galaxies (ELGs), and quasi-stellar objects (QSOs).

这是一套来自AbacusSummit宇宙学N体模拟套件（abacussummit.readthedocs.io/）的晕光锥目录。它们是通过对模拟输出进行后处理得到的"增值"数据产品。晕光锥目录的主要应用是构建天空中真实的模拟星系目录和弱透镜图。该算法（Hadzhiyska等人2021年描述）将29个红移时期（覆盖z=0.1-2.5）的CompaSO晕与其在光锥穿越时的粒子关联起来，随后将晕和粒子信息记录到易于访问的产品中，可通过CompaSO阅读器读取。基准宇宙学下的25个基础分辨率盒子拥有晕光锥目录，覆盖天空的一个八分圆（至z≈0.8），并延伸至约2000平方度（至z≈2.4）。大型盒子提供全天空的光锥信息（至z≈2.18），并进一步延伸至盒子角落（可用至z=2.25）。天空中的模拟星系目录可通过AbacusHOD脚本轻松生成，该脚本提供扩展的晕占据分布（Halo Occupation Distribution，HOD）框架（详见Yuan等人2021年的研究），且已修改为可与晕光锥目录兼容。可用的示踪物包括亮红星系（LRGs）、发射线星系（ELGs）和类星体（QSOs）。