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Bulge-Disk Decomposition of 659 Spiral and Lenticular Galaxy Brightness Profiles

机译:659个螺旋形和双凸形星系亮度曲线的凸起盘分解

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We present one of the largest homogeneous sets of spiral and lenticular galaxy brightness profile decompositions completed to date. The 659 galaxies in our sample have been fitted with a de Vaucouleurs law for the bulge component and an inner-truncated exponential for the disk component. Of the 659 galaxies in the sample, 620 were successfully fitted with the chosen fitting functions. The fits are generally well defined, with more than 90% having rms deviations from the observed profile of less than 0.35 mag. We find no correlations of fitting quality, as measured by these rms residuals, with either morphological type or inclination. Similarly, the estimated errors of the fitted coefficients show no significant trends with type or inclination. These decompositions form a useful basis for the study of the light distributions of spiral and lenticular galaxies. The object base is sufficiently large that well-defined samples of galaxies can be selected from it.
机译:我们介绍了迄今为止完成的最大的均匀的螺旋和双凸透镜星系亮度分布分解集之一。我们样本中的659个星系已针对凸出部分符合de Vaucouleurs定律,而对于圆盘部分则符合内部截断指数。在样本中的659个星系中,有620个已成功使用选定的拟合函数进行了拟合。拟合通常定义良好,超过90%的拟合值与观察到的曲线的均方根偏差小于0.35 mag。我们发现,通过这些均方根残值测得的拟合质量与形态类型或倾角没有相关性。同样,拟合系数的估计误差在类型或倾斜度上也没有显示出明显的趋势。这些分解为研究螺旋和双凸透镜星系的光分布提供了有用的基础。物基足够大,可以从中选择明确定义的星系样本。

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