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arXiv 1102.0234astro-ph.CO
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核星暴年轻星团驱动盘星系的质量和金属喷射效率

Mass and metal ejection efficiency in disk galaxies driven by young stellar clusters of nuclear starburst

A. Rodriguez-Gonzalez, A. Esquivel, A. C. Raga, P. Colin

摘要:

我们目前的结果从模型驱动的能量注入核星爆的星系风。星暴的总能量由年轻的中心星团提供,部分银河星际介质作为银河风的一部分被推出(在某些情况下,银河风包含新一代恒星产生的金属的重要部分)。我们已经进行了绝热和辐射的三维N体/光滑粒子流体动力学模拟银河风使用GADGET-2代码。数值模型涵盖了大范围的恒星暴(从$\sim10^2$到$\sim10^7$ M $_\odot$)和星系气体质量(从$\sim6\times10^6$到$\sim10^{11}$ M $_\odot$)。集中的中央星暴区是星系中产生质量和金属损失的有效引擎,也是驱动星系中金属重新分布的有效引擎。

英文摘要:

We present results from models of galactic winds driven by energy injected by nuclear starbursts. The total energy of the starburst is provided by young central stellar clusters and parts of the galactic interstellar medium are pushed out as part of the galactic wind (in some cases the galactic wind contains an important part of the metals produced in the new generation of stars). We have performed adiabatic and radiative 3D N-Body/Smooth Particle Hydrodynamics simulations of galactic winds using the GADGET-2 code. The numerical models cover a wide range of starburst (from $\sim10^2$ to $\sim10^7$ M$_\odot$) and galactic gas masses (from $\sim6\times10^6$ to $\sim10^{11}$ M$_\odot$). The concentrated central starburst regions are an efficient engine for producing of the mass and metal loss in galaxies, and also for driving the metal redistribution in the galaxies.

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