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arXiv 0911.0980astro-ph.GAastro-ph.CO
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星系的化学动力学模拟

Chemo-dynamical simulations of galaxies

Chiaki Kobayashi

摘要:

我们用自洽的三维流体动力学模型模拟了星系的形成和演化,包括恒星形成、超新星反馈和化学富集。超新星反馈不仅在解决[Zn/Fe]问题中起着重要的作用,而且在再现宇宙恒星形成速率历史和质量-金属丰度关系中也起着重要的作用。在银河型星系中,由于不同的恒星形成历史和Ia型超新星的贡献,球、盘和厚盘的运动学和化学丰度是不同的。

英文摘要:

We simulate the formation and evolution of galaxies with a self-consistent 3D hydrodynamical model including star formation, supernova feedback, and chemical enrichment. Hypernova feedback plays an essential role not only in solving the [Zn/Fe] problem, but also reproducing the cosmic star formation rate history and the mass-metallicity relations. In a Milky-Way type galaxy, kinematics and chemical abundances are different in bulge, disk, and thick disk because of different star formation histories and the contribution of Type Ia Supernovae.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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