标题： 尺度上的流为150 Mpc？ 显示英文标题

标题： Flows on scales of 150 Mpc?

摘要： 我们使用星系在三个方向上的特殊运动，研究了高达150 Mpc尺度上的大规模流体现象。使用椭圆星系的R波段CCD测光和光谱数据。利用Coma星系团校准基本平面距离指示器，并应用非均匀的Malmquist偏差修正。将线性整体流动模型拟合到样本区域的特殊速度，并且结果不反映Lauer和Postman（LP）观测到的整体流动。考虑到三个区域中星系分布与LP星系团之间的几何差异，确认了不一致；假设低密度CDM功率谱，我们发现样本中星系观测到的整体流动在99.8%置信水平上排除了LP整体流动。 显示英文摘要

摘要： We investigate the reality of large-scale streaming on scales of up to 150 Mpc using the peculiar motions of galaxies in three directions. New R-band CCD photometry and spectroscopy for elliptical galaxies is used. The Fundamental Plane distance indicator is calibrated using the Coma cluster and an inhomogeneous Malmquist bias correction is applied. A linear bulk-flow model is fitted to the peculiar velocities in the sample regions and the results do not reflect the bulk flow observed by Lauer and Postman (LP). Accounting for the difference in geometry between the galaxy distribution in the three regions and the LP clustersconfirms the disagreement; assuming a low-density CDM power spectrum, we find that the observed bulk flow of the galaxies in our sample excludes the LP bulk flow at the 99.8% confidence level.