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Preface: Special Session SpS3 Galaxy Evolution through Secular Processes

机译:前言:特殊会议SPS3通过世俗流程演变

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The meeting "Galaxy Evolution through Secular Processes," hosted as Special Session 3 at the XVIIIth General Assembly of the IAU in Beijing, brought together a broad community of astronomers actively working on topics related to the evolution of galaxies. This evolution is currently thought to have two phases: (1) a formative chaotic phase, where baryonic matter collected into dark halo "seeds" with the occurrence of frequent mergers; and (2) a slower secular evolutionary phase where internal perturbations such as bars and spirals interacted (and likely still interact) with a galaxy's stars and gas clouds to redistribute material and slowly change the morphology, such as growing bulges or pseudobulges from disk material.
机译:会议“通过世卫民族进程”在北京的XVIIITH大会上举办的“银河进化”,举办了北京的XVIIITH大会,汇集了一群广泛的天文学家社区,积极致力于与星系的演变有关的主题。目前认为这种进化有两个阶段:(1)形成的混沌阶段,其中焦化物质收集到暗光环“种子”中发生频繁的合并; (2)较慢的世俗进化阶段,其中诸如酒吧和螺旋等内部扰动(并且可能仍然相互作用)与星系的恒星和煤气云进行重新分配,并且缓慢改变形态,例如生长凸起或从盘材料中的凸起或假轴。

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