论文标题
超音速项目：冷却还是不冷却超人诱导的气体对象（Sigos）？
The Supersonic Project: To cool or not to cool Supersonically Induced Gas Objects (SIGOs)?
论文作者
论文摘要
由于巴元和暗物质之间存在相对的流速度，因此在早期宇宙中主要形成的超级诱导气体物体（SIGO）主要在暗物质光环之外形成。这些结构可能是球状簇的祖细胞。由于Sigos是由原始气体制成的，因此我们研究了原子冷却对其性质的影响。我们通过使用有或没有baryon-dark物质相对速度的移动网码{\ sc ea}来运行一套仿真套件，并且没有原子冷却的效果。我们表明，Sigo的密度，温度和延长是由重力相互作用而不是冷却确定的。 Sigos中的冷气分远高于暗物质光环。具体而言，我们表明Sigo的特征性低温和极高的气体密度为最早的恒星地层地位锻造了一个养育地面。
Supersonically Induced Gas Objects (SIGOs) primarily form in the early Universe, outside of dark matter halos due to the presence of a relative stream velocity between baryons and dark matter. These structures may be the progenitors of globular clusters. Since SIGOs are made out of pristine gas, we investigate the effect of atomic cooling on their properties. We run a suite of simulations by using the moving-mesh code {\sc arepo}, with and without baryon-dark matter relative velocity and with and without the effects of atomic cooling. We show that SIGO's density, temperature, and prolateness are determined by gravitational interactions rather than cooling. The cold gas fraction in SIGOs is much higher than that of dark matter halos. Specifically, we show that the SIGO's characteristic low temperature and extreme high gas density forges a nurturing ground for the earliest star formation sites.
