圆盘Galerkin流体动力学自适应网格加密模拟
Hydrodynamical Adaptive Mesh Refinement Simulations of Disk Galaxies
摘要：
到目前为止，完全宇宙学流体动力盘模拟到红移为零只进行了基于粒子的代码，如GADGET，汽油，或GCD+。鉴于光滑粒子流体动力学（SPH）的传统实现（假定）的局限性，或者至少，它们各自的特质，重要的是探索SPH范式的补充方法来星系形成。我们提出了第一个高分辨率的宇宙盘模拟红移零使用自适应网格细化（AMR）为基础的流体动力学代码，在这种情况下，RAMSES。我们分析了模拟恒星盘的垂直加热，速度椭球，恒星星族，垂直和径向丰度梯度（气体和恒星），组装/陷落的历史，翘曲/lopsideness，磁盘边缘/截断（气体和恒星），ISM物理实现的时间和空间演化，并比较和对比这些属性与我们的样本的宇宙SPH磁盘，GCD+产生。这些初步结果是我们长期银河考古模拟计划中的第一个。
英文摘要：
To date, fully cosmological hydrodynamic disk simulations to redshift zero have only been undertaken with particle-based codes, such as GADGET, Gasoline, or GCD+. In light of the (supposed) limitations of traditional implementations of smoothed particle hydrodynamics (SPH), or at the very least, their respective idiosyncrasies, it is important to explore complementary approaches to the SPH paradigm to galaxy formation. We present the first high-resolution cosmological disk simulations to redshift zero using an adaptive mesh refinement (AMR)-based hydrodynamical code, in this case, RAMSES. We analyse the temporal and spatial evolution of the simulated stellar disks' vertical heating, velocity ellipsoids, stellar populations, vertical and radial abundance gradients (gas and stars), assembly/infall histories, warps/lopsideness, disk edges/truncations (gas and stars), ISM physics implementations, and compare and contrast these properties with our sample of cosmological SPH disks, generated with GCD+. These preliminary results are the first in our long-term Galactic Archaeology Simulation program.
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