In preceding papers of this series, TF relations for galaxies in 24 clusters with radial velocities between 1000 and 9200 km s-1 (SCI sample) were obtained, a Tully-Fisher (TF) template relation was constructed, and mean offsets of each cluster with respect to the template were obtained. Here, an estimate of the line-of-sight peculiar velocities of the clusters and their associated errors are given. It is found that cluster peculiar velocities in the cosmic microwave background reference frame do not exceed 600 km s-1 and that their distribution has a line-of-sight dispersion of 300 km s-1, suggesting a more quiescent cluster peculiar velocity field than previously reported. When measured in a reference frame in which the Local Group is at rest, the set of clusters at cz 3000 km s-1 exhibits a dipole moment in agreement with that of the CMB, both in amplitude and apex direction. It is estimated that the bulk flow of a sphere of 6000 km s-1 radius in the CMB reference frame is between 140 and 320 km s-1.
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机译:在本系列的前几篇论文中,获得了星速在1000和9200 km s-1之间的24个星团的TF关系(SCI样本),构造了Tully-Fisher(TF)模板关系,并且每个星团的平均偏移获得关于模板的信息。在此,给出了群集的视线速度及其相关误差的估计。发现宇宙微波背景参考框架中的簇特有速度不超过600 km s-1,并且它们的分布具有300 km s-1的视线色散,这表明簇静态速度场比以前的报道。在本地组处于静止状态的参考帧中进行测量时,在cz> 3000 km s-1处的群集集在振幅和顶点方向上都显示出与CMB一致的偶极矩。据估计,在CMB参考系中,半径为6000 km s-1的球体的总流量在140至320 km s-1之间。
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