| 数据题名: | Virgo Millenium Database |
| 数据类型: | 数据仓储
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| 语种: | 英语
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| 国别: | Germany
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| 关键词: | halo
; subhalo
; galaxies
; lightcones
; cosmology
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| 学科领域: | Astrophysics and Astronomy ; Particles, Nuclei and Fields ; Geophysics and Geodesy ; Physics ; Natural Sciences ; Geosciences (including Geography) ;
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| 英文摘要: | When published in 2005, the Millennium Run was the largest ever simulation of the formation of structure within the ΛCDM cosmology. It uses 10(10) particles to follow the dark matter distribution in a cubic region 500h(−1)Mpc on a side, and has a spatial resolution of 5h−1kpc. Application of simplified modelling techniques to the stored output of this calculation allows the formation and evolution of the ~10(7) galaxies more luminous than the Small Magellanic Cloud to be simulated for a variety of assumptions about the detailed physics involved. As part of the activities of the German Astrophysical Virtual Observatory we have created relational databases to store the detailed assembly histories both of all the haloes and subhaloes resolved by the simulation, and of all the galaxies that form within these structures for two independent models of the galaxy formation physics. We have implemented a Structured Query Language (SQL) server on these databases. This allows easy access to many properties of the galaxies and halos, as well as to the spatial and temporal relations between them. Information is output in table format compatible with standard Virtual Observatory tools. With this announcement (from 1/8/2006) we are making these structures fully accessible to all users. Interested scientists can learn SQL and test queries on a small, openly accessible version of the Millennium Run (with volume 1/512 that of the full simulation). They can then request accounts to run similar queries on the databases for the full simulations. In 2008 and 2012 the simulations were repeated. |
| URL: | https://www.re3data.org/repository/r3d100010646
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| 资源类型: | 科学数据
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/111340
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| Appears in Collections: | 全球变化的国际研究计划
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| Recommended Citation: | |
. Virgo Millenium Database.
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