Astron. Astrophys. Suppl. Ser.
Volume 129, Number 1, April I 1998
|Page(s)||31 - 40|
|Published online||15 April 1998|
Galaxy redshifts in 3 medium–distant clusters*
Osservatorio Astronomico di Bologna, I–40126 Bologna, Italy
2 Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio, I-35122 Padova, Italy
Send offprint request to: A. Cappi
Accepted: 15 September 1997
We present results from spectroscopic observations of 3 rich and moderately distant galaxy clusters at the 3.6 m ESO telescope at La Silla. We measured 54 galaxy redshifts in 3 fields centered on the clusters A 3663 and A 3889, which are rich and distant ACO clusters, and on a new cluster, Cl , identified on a deep plate. We present estimates of their velocity dispersion and virial mass. Cl had been noted as a concentration in a poor ACO cluster, S0102, with distance class . We show that Cl is a more distant cluster, connected to a large scale–structure at .
Key words: galaxies: clusters of / distances and redshifts / cosmology: observations / galaxies: clusters: Cl 0053-37; A 3663; A 3889
© European Southern Observatory (ESO), 1998