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The initial mass function in clusters: theoretical and observational perspectives

机译:簇中的初始质量函数:理论和观察角度

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We review the success of current simulations in reproducing the observed initial mass function (IMF) in clusters and show that whereas the two main types of simulation invoke the same physics to explain the point at which the IMF flattens from a Salpeter slope, they reproduce the Salpeter tail itself by quite different means. We highlight the fact that a proper modelling of the thermal properties of star-forming gas is probably crucial in explaining why the IMF is apparently quite insensitive to cloud parameters. We also explore how the mass of a cluster’s most massive star depends on cluster mass and how this issue impacts the relationship between the IMF in individual clusters and the integrated galactic IMF. We emphasise the importance of a careful statistical treatment of data in this area.
机译:我们回顾了当前模拟在重现簇中观察到的初始质量函数(IMF)方面的成功经验,并表明尽管两种主要类型的模拟调用相同的物理学来解释IMF从Salpeter斜率展平的点,但它们重现了Salpeter尾巴本身通过完全不同的方式。我们强调了这样一个事实,即正确解释恒星形成气体的热特性对于解释为什么IMF显然对云参数非常不敏感至关重要。我们还将探讨星团中最大质量恒星的质量如何取决于星团质量,以及该问题如何影响单个星团中IMF与集成银河IMF之间的关系。我们强调在这一领域对数据进行认真的统计处理的重要性。

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