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Distribution of Maximal Luminosity of Galaxies in the Sloan Digital Sky Survey

机译:斯隆数字天空调查中星系最大光度的分布

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Extreme value statistics (EVS) is applied to the pixelized distribution of galaxy luminosities in the Sloan Digital Sky Survey (SDSS). We analyze the DR8 Main Galaxy Sample (MGS) as well as the Luminous Red Galaxy Sample (LRGS). A non-parametric comparison of the EVS of the luminosities with the Fisher-Tippett-Gumbel distribution (limit distribution for independent variables distributed by the Press-Schechter law) indicates a good agreement provided uncertainties arising both from the finite size of the samples and from the sample size distribution are accounted for. This effectively rules out the possibility of having a finite maximum cutoff luminosity.
机译:极值统计(EVS)应用于Sloan数字天空调查(SDSS)中银河亮度的像素化分布。我们分析DR8主要的星系样本(MGS)以及发光红星系样品(LRG)。与Fisher-Tippett-Gumbel分布的亮度EV的非参数比较(由新闻 - Schechter Laver分布的独立变量的限制分布)表示良好的一致性提供了来自样品的有限尺寸和来自的不确定性计算样本大小分布。这有效地排除了有限最大截止光度的可能性。

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