论文标题
罗塞拉（Rosella）：P-Millennium模拟中的模拟目录
Rosella: A mock catalogue from the P-Millennium simulation
论文作者
论文摘要
深色能源光谱仪器明亮星系调查（DESI BGS）的科学剥削需要模拟构建，该模拟与星系群体的特性紧密模仿了实际DESI BGS目标的模拟。我们创建了一个高保真模拟的星系目录，包括有关星系及其宿主暗物质Subhaloes的信息。模拟目录使用Subhalo丰度匹配（假）与散射散布的p-Millennium n体型模拟，并在BGS中间红移处使用星系〜0.2的星系，使用编队红移信息来分配（G-R）REST-FRAME颜色。该模拟提供了有关R波段绝对大小，（G-R）休息框的颜色，3D位置和速度的DESI BGS星系的完整样本的信息（542 MPC/H）^3，以及大量的宿主暗物质光环。这款P-Millennium desi BGS模拟目录非常适合调整无法解析Desi BGS星系的近似模型，以测试分析管道中的系统学和解释（非化学的焦点焦点）DESI BGS分析。
The scientific exploitation of the Dark Energy Spectroscopic Instrument Bright Galaxy Survey (DESI BGS) data requires the construction of mocks with galaxy population properties closely mimicking those of the actual DESI BGS targets. We create a high fidelity mock galaxy catalogue, including information about galaxies and their host dark matter subhaloes. The mock catalogue uses subhalo abundance matching (SHAM) with scatter to populate the P-Millennium N-body simulation with galaxies at the median BGS redshift of ~ 0.2, using formation redshift information to assign (g-r) rest-frame colours. The mock provides information about r-band absolute magnitudes, (g-r) rest-frame colours, 3D positions and velocities of a complete sample of DESI BGS galaxies in a volume of (542 Mpc/h)^3, as well as the masses of host dark matter haloes. This P-Millennium DESI BGS mock catalogue is ideally suited for the tuning of approximate mocks unable to resolve subhaloes that DESI BGS galaxies reside in, to test for systematics in analysis pipelines and to interpret (non-cosmological focused) DESI BGS analysis.
