variable-velocity star

Then the formula of relation between light-wavelength change and tangential and radial velocity of light source is presented and the conclusions listed below are reached: (1)The light-wavelength change is determined together by tangential and radial velocity of light source; (2)Doppler effect is a special case of above-mentioned formula, (3)When the radi.

采用速度矢量分析法,揭示了绝对光速、相对光速和光源速度的关系,给出了光波波长变化与光源的切向速度和视向速度的关系式,并得出如下结论:(1)光波波长的变化由光源的切向速度和视向速度共同决定;(2)多普勒效应是上述关系式的一个特例;(3)当光源的视向速度为0时,光波波长的变化完全由光源的切向速度决定,其切向速度越大,光波的波长越短;(4)当光源的切向速度和视向速度都不为0时,在一定条件下光波波长不变。

On the basis of radial velocity membership determination method, while the distribution of surface-number-density of galaxies in cluster regions is concerned s imultaneously, we calculate the distribution parameters and membership probabilities of individual galaxies for 8 Abell clusters.

本文利用在考虑团内星系面数密度分布的前提下，以视向速度为判据，按最大似然原理解算团分布参数和成员概率的严格统计方法，对8个Abell星系团进行了成员研究。

The line-of-sight velocity distributions (LOSVDs), including velocity dispersions, velocity distributions profile and redshift, are the important observational constraints in our understanding of the galactic dynamics, structures and evolution, as well as the nature of supermassive black holes in the center of galaxies.

星系的恒星视向速度分布是星系动力学模型的重要观测约束,其特征参数包括速度弥散度、分布轮廓以及红移。