Simulation data + processed quantities for the isolated and wind cases of the Large Magellanic Cloud

We used the GIZMO-MHD code to create a simulation of the Large Magellanic Cloud with two scenarios - an isolated galaxy and a galaxy passing through the circumgalactic medium of the Milky Way and experiencing ram pressure stripping as a result of the Milky Way wind. Our mass resolution is 250 solar masses (for the medhighres cases), which is one of the best out there for galaxy simulations containing magnetic fields. While the entire simulation runs over 500 Myr astrophysical timescales, we only upload the final snapshot from both scenarios as they should be equivalent to the present-day LMC. We upload processed quantities, which account for varied radiation background at different places in the interstellar medium, and tools to calculate mock quantities like rotation measures. We also attach one snapshot + processed quantities at low resolution (called medres) for testing.

本研究采用GIZMO-MHD代码开展大麦哲伦星系（Large Magellanic Cloud, LMC）的数值模拟，共设置两类演化场景：孤立星系场景，以及星系穿越银河系星系周介质（circumgalactic medium, CGM）并受银河系星风作用引发冲压剥离（ram pressure stripping）的相互作用场景。本模拟针对中高分辨率（medhighres）算例的质量分辨率可达250倍太阳质量，是当前包含磁场的星系模拟中精度领先的方案之一。整个模拟的演化时标覆盖超过500百万年的天体物理过程，但我们仅上传两类场景的最终模拟快照，因其可等效为现今观测到的大麦哲伦星系。本次上传的数据包含两类核心内容：一是经过后处理的物理量，该数据集充分考虑了星际介质（interstellar medium, ISM）不同区域的辐射背景差异；二是用于计算旋转测度等模拟观测量的配套工具。此外，我们还附带了一套低分辨率（命名为medres）的模拟快照与后处理物理量，用于测试验证。