We present results of an all-sky observing program designed to improve the quality of the I band Tully-Fisher (TF) relation and to accurately determine the reflex motion of the Local Group with respect to intermediate redshift clusters. We have obtained between 5 and 15 TF measurements per cluster on a sample of 50 clusters with redshifts 0.02 ≲ z ≲ 0.08. The data extends the TF study of nearby clusters of Giovanelli et al. (1997); the two data sets are used jointly to establish a cluster inertial reference frame from which peculiar velocities and bulk flow solutions are obtained.
American Astronomical Society Meeting Abstracts
- Pub Date:
- December 1997