论文标题
大规模早期星系的合并驱动的演变
The merger-driven evolution of massive early-type galaxies
论文作者
论文摘要
早期型星系（ETG）的结构和运动学特性的演变，它们的扩展关系以及其出色的金属性和年龄包含有关这些系统组装历史的宝贵信息。我们介绍了ETG的恒星质量分散性关系的演变结果，特别是针对定义ETG的某些选择标准的影响。我们还试图阐明位于原位和前地图恒星种群在大规模ETG中的作用，从而可以解释观察到的金属性分布。
The evolution of the structural and kinematic properties of early-type galaxies (ETGs), their scaling relations, as well as their stellar metallicity and age contain precious information on the assembly history of these systems. We present results on the evolution of the stellar mass-velocity dispersion relation of ETGs, focusing in particular on the effects of some selection criteria used to define ETGs. We also try to shed light on the role that in-situ and ex-situ stellar populations have in massive ETGs, providing a possible explanation of the observed metallicity distributions.
