标题： 暴力事件是否导致星系形态循环？ 显示英文标题

标题： Are violent events responsible of a Galaxy Morphological loop?

摘要： 我们使用宇宙学SPH模拟来研究星系合并和相互作用对星系盘和核球成分形成的影响。 我们发现，并合过程中发生的恒久演化似乎是在形成具有观测对应物的稳定盘-核球系统的关键过程，并有助于建立星系中观察到的基本关系。 我们的研究结果表明，恒久演化阶段将核球和盘成分的形成机制耦合在一起。 根据我们的结果，在特定的稳定性属性和并合参数下，剧烈事件可能会引发一个形态循环，在此循环中，结果可能是盘或球状结构。 显示英文摘要

摘要： We use cosmological SPH simulations to investigate the effects of mergers and interactions on the formation of the bulge and disc components of galactic systems. We find that secular evolution during mergers seems to be a key process in the formation of stable disc-bulge systems with observational counterparts and contributes to establish the fundamental relations observed in galaxies. Our findings suggest that the secular evolution phase couples the formation mechanisms of the bulge and disc components. According to our results, depending on the particular stability properties and merger parameters, violents events could drive a morphological loop in which the outcome could be a disc or a spheroid.