Abstract

Globular clusters \((GCs)\) are among the oldest stellar systems in the early universe. We present galaxies formed with two different stellar populations, which depend on the relation between mass and radius. The primordial values of the number of globular clusters can be distinctly separated into two groups of densities, and thus are dependent on galaxy mass. Evidence that dE and E galaxies may have different origins has been found, the former having formed a smaller number of \(GCs\) per galaxy, which is consistent with downsizing.

中文翻译：

---

质量半径关系和球状星团数量的二分法

摘要

球状星团\((GCs)\)是早期宇宙中最古老的恒星系统之一。我们展示了由两种不同的恒星群形成的星系，这取决于质量和半径之间的关系。球状星团数量的原始值可以明显地分为两组密度，因此取决于星系质量。已经发现了 dE 和 E 星系可能具有不同起源的证据，前者在每个星系中形成了较少数量的\(GCs\)，这与缩小规模是一致的。