论文标题
在过去的12个回旋中
The stellar-to-halo mass relation over the past 12 Gyr
论文作者
论文摘要
了解星系性能如何链接到它们所居住的暗物质光环，以及它们如何共同发展是限制与星系形成相关的过程的强大工具。恒星至中心的质量关系（SHMR）及其在宇宙历史上的演变提供了对星系形成模型的见解，并允许在N-Body暗物质模拟中将星系质量分配给Halos。我们使用统计方法将观测到的宇宙场上的星系恒星质量函数与来自destgrain模拟的暗物质光晕质量函数以及从z = 0到z = 4的理论参数化。我们还提出了一个经验模型，以描述恒星至中心质量关系的演变，这是红移的函数。我们计算星系的恒星形成效率（SFE），并将结果与以前的工作和半分析模型进行了比较。
Understanding how galaxy properties are linked to the dark matter halos they reside in, and how they co-evolve is a powerful tool to constrain the processes related to galaxy formation. The stellar-to-halo mass relation (SHMR) and its evolution over the history of the Universe provides insights on galaxy formation models and allows to assign galaxy masses to halos in N-body dark matter simulations. We use a statistical approach to link the observed galaxy stellar mass functions on the COSMOS field to dark matter halo mass functions from the DUSTGRAIN simulation and from a theoretical parametrization from z=0 to z=4. We also propose an empirical model to describe the evolution of the stellar-to-halo mass relation as a function of redshift. We calculate the star-formation efficiency (SFE) of galaxies and compare results with previous works and semi-analytical models.
