MICE大挑战光锥模拟II：Halo和Galaxy目录
The MICE Grand Challenge Lightcone Simulation II: Halo and Galaxy catalogues
摘要：
这是一系列三篇论文中的第二篇，我们在其中展示了MICE合作的端到端模拟，MICE Grand Challenge（MICE-GC）运行。N-体包含约700亿暗物质粒子在一个$(3 \, h^{-1} \, {\rm Gpc})^3$共动体积跨越5个数量级的动力学范围。在这里，我们介绍了晕和星系目录建立在它的基础上，无论是在一个广泛的（$5000 \,{\rm deg}^2$）和深（$z<1.4$）光锥和几个共动快照。晕轮消退至少量$10^{11} \,h^{-1}\,{\rm M_{\odot}}$。这使我们能够将星系的模型降低到绝对星等M $_r<-18.9$。我们使用了一种新的混合Halo Occupation Distribution和Abbreviation Matching技术进行星系分配。该目录包括所有星系的光谱能量分布。我们描述了各种晕和星系聚类的应用。我们讨论了质量分辨效应如何在$\lesssim 5\%$水平上对分辨差的晕的大尺度$2$-pt聚类幅度产生偏差，以及它们的$3$-pt相关函数。我们发现一个特征的尺度依赖的偏见$\lesssim 6\%$整个BAO功能的晕远高于$M_{\star}\sim 10^{12}\,h^{-1}\,{\rm M_{\odot}}$和LRG星系。对于远低于$M_{\star}$的晕，在$100\,{\rm Mpc} h^{-1}$的尺度依赖性为$\lesssim 2\%$。最后讨论了大尺度Kaiser极限在红移范围内的有效性以及对非线性尺度的偏离。我们通过一个专门的门户网站http://cosmohub.pic.es公开发布了当前版本的光锥晕和星系目录（MICECATv1.0），以帮助开发和利用新一代天文学调查。
英文摘要：
This is the second in a series of three papers in which we present an end-to-end simulation from the MICE collaboration, the MICE Grand Challenge (MICE-GC) run. The N-body contains about 70 billion dark-matter particles in a $(3 \, h^{-1} \, {\rm Gpc})^3$ comoving volume spanning 5 orders of magnitude in dynamical range. Here we introduce the halo and galaxy catalogues built upon it, both in a wide ($5000 \,{\rm deg}^2$) and deep ($z<1.4$) light-cone and in several comoving snapshots. Halos were resolved down to few $10^{11} \,h^{-1}\,{\rm M_{\odot}}$. This allowed us to model galaxies down to absolute magnitude M$_r<-18.9$. We used a new hybrid Halo Occupation Distribution and Abundance Matching technique for galaxy assignment. The catalogue includes the Spectral Energy Distributions of all galaxies. We describe a variety of halo and galaxy clustering applications. We discuss how mass resolution effects can bias the large scale $2$-pt clustering amplitude of poorly resolved halos at the $\lesssim 5\%$ level, and their $3$-pt correlation function. We find a characteristic scale dependent bias of $\lesssim 6\%$ across the BAO feature for halos well above $M_{\star}\sim 10^{12}\,h^{-1}\,{\rm M_{\odot}}$ and for LRG like galaxies. For halos well below $M_{\star}$ the scale dependence at $100\,{\rm Mpc} h^{-1}$ is $\lesssim 2\%$. Lastly we discuss the validity of the large-scale Kaiser limit across redshift and departures from it towards nonlinear scales. We make the current version of the light-cone halo and galaxy catalogue (MICECATv1.0) publicly available through a dedicated web portal, http://cosmohub.pic.es, to help develop and exploit the new generation of astronomical surveys.
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