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arXiv 0712.0799astro-ph
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模拟盘状星系的形成和演化

Modelling the formation and evolution of disk galaxies

M. J. Stringer, A. J. Benson

摘要:

受到最近关于盘星系反馈(Efstathiou 2000,Silk 2003)和模拟气晕角动量分布(Sharma and Steinmetz 2005)的研究的启发,发展了一个盘星系形成和演化的全动力学模型。这是用来演示如何观察到的星系系统可以从类似于模拟中发现的晕形成,并应用物理动机的恒星形成和反馈模型,以探索这些过程的真实性质是否会体现在本地和宇宙学观测。这是通过与最初由达勒姆大学的研究小组开发的星系形成模型(Cole et al. 2000)的计算集成而实现的。

英文摘要:

Inspired by recent work on feedback in disk galaxies (Efstathiou 2000, Silk 2003) and on the angular momentum distribution in simulated gas halos (Sharma and Steinmetz 2005), a fully dynamic model of disk galaxy formation and evolution has been developed. This is used to demonstrate how observed galactic systems could have formed from halos similar to those found in simulations and applies physically motivated models of star formation and feedback to explore whether the true nature of these processes would be manifest from local and cosmological observables. This is made possible by computational integration with the galaxy formation model developed originally by the group at Durham University (Cole et al. 2000).

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