Issue |
Astron. Astrophys. Suppl. Ser.
Volume 129, Number 1, April I 1998
|
|
---|---|---|
Page(s) | 31 - 40 | |
DOI | https://doi.org/10.1051/aas:1998172 | |
Published online | 15 April 1998 |
Galaxy redshifts in 3 medium–distant clusters*
1
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
Received:
1
August
1997
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