论文标题
像麦芽岩一样的星系对的演变以及在潮汐，RAM压力和恒星反馈的模拟中产生的麦哲伦流类似物的产生
The Evolution of Magellanic-like Galaxy Pairs and The Production of Magellanic Stream Analogues in Simulations with Tides, Ram Pressure, and Stellar Feedback
论文作者
论文摘要
我们提出了一系列类似麦芽素化系统的化学动力学模拟，这些系统包括两个相互作用的相等质量矮人的星系，它们绕着大型宿主星系，包括反馈和恒星形成，潮汐和RAM压力。我们研究矮人的恒星形成和化学富集史以及麦哲伦流类似物的产生。矮人通过潮汐力相互互动，扭曲其形态并触发恒星形成。溪流由反馈和相互作用引起的流出自然产生，由潮汐力拉伸。与最近的一些模拟背道而驰，我们发现即使在宿主银河系的RAM压力的情况下，领先的臂仍然存在。矮人和宿主星系之间的相互作用在流中产生多个运动学成分。持续的恒星形成和夹带的低金属气体的结合使该流具有复杂的化学结构，平均金属性通常低于矮人。
We present a series of chemodynamical simulations of Magellanic-like systems consisting of two interacting, equal-mass dwarf galaxies orbiting a massive host galaxy, including feedback and star formation, tides, and ram pressure. We study the star formation and chemical enrichment history of the dwarfs, and the production of a Magellanic Stream analogue. The dwarfs interact with each other through tidal forces, distorting their morphologies and triggering star formation. A stream is naturally produced as outflows, induced by feedback and interactions, are stretched by tidal forces. Counter to some recent simulations, we find that the leading arm persists even in the presence of ram pressure from the host galaxy. Interactions between the dwarfs and the host galaxies produce multiple kinematic components in the stream, as observed. A combination of ongoing star-formation and entrained low-metallicity gas causes the stream to have a complex chemical structure, with an average metallicity that is generally lower than that of the dwarfs.
