Properties of galaxies reproduced by a hydrodynamic simulation

被引：1062

作者：

Vogelsberger, M. ^{[1
]}

Genel, S. ^{[2
]}

Springel, V. ^{[3
,4
]}

Torrey, P. ^{[2
]}

Sijacki, D. ^{[5
,6
]}

Xu, D. ^{[3
]}

Snyder, G. ^{[7
]}

Bird, S. ^{[8
]}

Nelson, D. ^{[2
]}

Hernquist, L. ^{[2
]}

机构：

[1] MIT, Dept Phys, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[2] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[3] Heidelberg Inst Theoret Studies, D-69118 Heidelberg, Germany

[4] Heidelberg Univ, Zentrum Astron, ARI, D-69120 Heidelberg, Germany

[5] Kavli Inst Cosmol, Cambridge CB3 0HA, England

[6] Inst Astron, Cambridge CB3 0HA, England

[7] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[8] Inst Adv Study, Princeton, NJ 08540 USA

来源：

NATURE | 2014年 / 509卷 / 7499期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

MOVING-MESH COSMOLOGY; COLD DARK-MATTER; LY-ALPHA SYSTEMS; STAR-FORMATION; POWER SPECTRUM; RADIAL-DISTRIBUTION; SCALING RELATIONS; MASSIVE GALAXIES; DWARF GALAXIES; LOCAL UNIVERSE;

D O I：

10.1038/nature13316

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Previous simulations of the growth of cosmic structures have broadly reproduced the 'cosmic web' of galaxies that we see in the Universe, but failed to create a mixed population of elliptical and spiral galaxies, because of numerical inaccuracies and incomplete physical models. Moreover, they were unable to track the small-scale evolution of gas and stars to the present epoch within a representative portion of the Universe. Here we report a simulation that starts 12 million years after the Big Bang, and traces 13 billion years of cosmic evolution with 12 billion resolution elements in a cube of 106.5 megaparsecs a side. It yields a reasonable population of ellipticals and spirals, reproduces the observed distribution of galaxies in clusters and characteristics of hydrogen on large scales, and at the same time matches the 'metal' and hydrogen content of galaxies on small scales.

引用

页码：177 / +

页数：8

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