Da. Dale et al., SEEKING THE LOCAL CONVERGENCE DEPTH .1. TULLY-FISHER OBSERVATIONS OF THE CLUSTERS A168, A397, A569, A1139, A1228, AND A1983, The Astronomical journal, 114(2), 1997, pp. 455-473
We present first results of an all-sky observing program designed to i
mprove the quality of the I band Tully-Fisher (TF) template and to obt
ain the reflex motion of the Local Group with respect to clusters to z
similar to 0.06. We are obtaining between 5 and 15 TF measurements pe
r cluster on a sample of similar to 50 clusters at intermediate redshi
fts (0.02 less than or similar to z less than or similar to 0.06). Pre
sentation of the data for seven Abell clusters of galaxies is given he
re. These data incorporate methods for estimating the true inclination
of a spiral disk, an observational parameter undervalued for small an
gular-sized galaxies or for galaxies observed in poor seeing condition
s. (C) 1997 American Astronomical Society.