Predicted future fate of COSMOS galaxy protoclusters over 11 Gyr with constrained simulations
Predicted future fate of COSMOS galaxy protoclusters over 11 Gyr with constrained simulations
复制标题
DOI：
10.1038/s41550-022-01693-0
复制
发表时间：
2022-06
期刊：
影响因子：
14.1
通讯作者：
Metin Ata;K. Lee;C. D. Vecchia;F. Kitaura;O. Cucciati;B. Lemaux;D. Kashino;T. Müller
中科院分区：
文献类型：
--
作者：
Metin Ata;K. Lee;C. D. Vecchia;F. Kitaura;O. Cucciati;B. Lemaux;D. Kashino;T. Müller
宇宙学模拟是研究宇宙的重要工具，但它们通常与观测到的真实的结构不直接匹配。另一方面，受约束的宇宙学模拟被设计成与观测到的星系分布相匹配。在这里，我们提出了约束模拟的基础上，在红移ofz <$2.3，对应于一个时代的近11 Gyr前的光谱调查。这使我们能够将模拟“快进”到我们今天，并自洽地研究所观察到的宇宙结构的演变。我们证实，以前报道的几个原星系团将演变成大规模的星系团，我们现在的时代，包括“的”结构，我们预测将崩溃成一个巨大的超星系团跨越100 Mpc。我们还发现了以前未知的原团簇，其最终质量比通常通过其他方法检测到的低，这些方法使该体积内已知原团簇的数量增加了近一倍。约束模拟，适用于未来的高红移数据集，代表了一个独特的机会，研究早期的结构形成和匹配的星系性质之间的高红移和低。
Cosmological simulations are crucial tools in studying the Universe, but they typically do not directly match real observed structures. Constrained cosmological simulations, on the other hand, are designed to match the observed distribution of galaxies. Here we present constrained simulations based on spectroscopic surveys at a redshift ofz≈ 2.3, corresponding to an epoch of nearly 11 Gyr ago. This allows us to ‘fast-forward’ the simulation to our present day and study the evolution of observed cosmic structures self-consistently. We confirm that several previously reported protoclusters will evolve into massive galaxy clusters by our present epoch, including the ‘Hyperion’ structure that we predict will collapse into a giant filamentary supercluster spanning 100 Mpc. We also discover previously unknown protoclusters with lower final masses than are typically detectable by other methods that nearly double the number of known protoclusters within this volume. Constrained simulations, applied to future high-redshift datasets, represent a unique opportunity for studying early structure formation and matching galaxy properties between high and low redshifts.