20个旋涡星系的测量

The Equivalent Thickness of 20 Spiral Galaxies

应用新的方法重新计算了PGC00281等20个非侧向漩涡星系的等值厚度,禁区半径,切向角,倾角等物理参数.这些参数是在对图像进行了对数螺旋拟合的基础上计算获得的.并与传统的方法做了比较,分析了测量结果.本文应用Peng提出的厚度公式计算得出了星系盘的等值厚度.希望这些物理参数对以后的星系研究有一定的帮助.

This paper investigates the equivalent thicknesses of 20 non-edge-on spiral galaxies,and some other parameters,such as forbidden radius,pitch angle and arm＇s inclination.Basced on the logarithm spiral,we obtained those parameters.We compared the new method with the old method,and also analyzed the result.We hoped those parameters were helpful for the future galaxy study.