Large-scale streaming of cluster elliptical galaxies

Large-scale deviations from isotropic Hubble flow have been investigated using first-ranked cluster elliptical galaxies. The sky coverage of the sample used precludes a general solution for a dipole anisotropy, but it is well suited to investigation of the component of any motion of these galaxies along a direction defined by the dipole anisotropy in the 2.7 K cosmic background radiation. It is found that the cluster ellipticals have a velocity component along this direction of approx. 600 km s-1. (author)