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A Study of the Intrinsic Flatness of Disk Galaxies

机译:盘状星系的内在平坦性研究

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摘要

The intrinsic flatness of disk galaxies is very important when calculating their angle of inclinations. Our statistical analysis of 14,988 disk galaxies taken from the Lyon-Meudon Extragalactic Database shows that the intrinsic flatness is closely related to the morphological type. In general, the intrinsic axis ratio q_0 is larger for lenticulars and irregulars than for spirals, and among the sprials, is larger for the early types than for the late types. The Scd galaxies are found to have the smallest q_0.
机译:盘状星系的固有平坦度在计算其倾斜角度时非常重要。我们对来自里昂-默顿河外星系数据库的14,988个盘状星系的统计分析表明,内在平坦度与形态类型密切相关。通常,双凸透镜和不规则透镜的本征轴比q_0大于螺旋形,并且在sprials中,早期类型的内轴比率q_0大于晚期类型。发现Scd星系的q_0最小。

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