最大恒星质量与星团成员数的关系
Maximum stellar mass versus cluster membership number revisited
摘要：
我们已经提出了一个新的汇编观测的最大恒星质量与集群成员数从文献中，我们分析的一致性与预测的一个简单的随机抽取假设的恒星质量选择集群。在此之前，Weiglit和Kroupa已经提出，在低质量星团中，最大恒星质量比随机抽取的结果要低，并指出这可能对在高质量时使银河系的积分初始质量函数（IGIMF）变陡有重要意义。我们的编译演示了如何观察到的分布在平面上的最大恒星质量与成员数的影响的目标选择的方法，特别是，相当低的n集群与大的最大恒星质量是丰富的观测数据集，特别是寻求集群在周围的高质量恒星。虽然我们不认为我们的汇编是完整的或公正的，我们讨论的方法，这些数据应进行统计分析。我们的初步结论是，这些数据并没有显示出与随机抽取的预期有任何显著的偏差。
英文摘要：
We have made a new compilation of observations of maximum stellar mass versus cluster membership number from the literature, which we analyse for consistency with the predictions of a simple random drawing hypothesis for stellar mass selection in clusters. Previously, Weidner and Kroupa have suggested that the maximum stellar mass is lower, in low mass clusters, than would be expected on the basis of random drawing, and have pointed out that this could have important implications for steepening the integrated initial mass function of the Galaxy (the IGIMF) at high masses. Our compilation demonstrates how the observed distribution in the plane of maximum stellar mass versus membership number is affected by the method of target selection; in particular, rather low n clusters with large maximum stellar masses are abundant in observational datasets that specifically seek clusters in the environs of high mass stars. Although we do not consider our compilation to be either complete or unbiased, we discuss the method by which such data should be statistically analysed. Our very provisional conclusion is that the data is not indicating any striking deviation from the expectations of random drawing.
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