双重星系
- 网络binary galaxy;double galaxy
双重星系-
计算双重星系质量时平均投影因子的推导
Determination of the average projection factor in calculating the mass of binary galaxies
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双重星系或天体系统，用动力学方法测定其质量时，观测到的视向速度和距离间距，都是各自值的投影值，可用统计方法，求出一个关于它们的平均投影因子。
Both of the observed radial velocity and separation being projective values , in order to determine the mass of binary galaxies the average projection factor may be derived by a statistical method .
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双重星系上方的雪茄形天体是星系群中的另一个成员。
The cigar-shaped object above the galaxy duo is another member of the group .
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双重和多重星系的演化趋向
The evolutionary tendency of binary and multiple galaxies