A&A Supplement Ser., Vol. 124, August 1997, 283-289
Received July 22; accepted November 6, 1996
M. Pierre - J. Oukbir - D. Dubreuil - G. Soucail - J.-L. Sauvageot - Y. Mellier
Send offprint request: M. Pierre
mpierre@ariane.saclay.cea.fr
CEA Saclay DSM/DAPNIA, Service d'Astrophysique,
F-91191 Gif sur Yvette, France
Observatoire Midi-Pyrénées, Laboratoire d'Astrophysique de Toulouse,
UMR 5572, 14 Avenue E. Belin, F-31400 Toulouse, France
Institut d'Astrophysique, 98bis Bd. Arago, F-75014 Paris, France
We present the first results of an optical follow-up of X-ray bright clusters of galaxies located between : B and R photometry as well as medium resolution spectroscopy of the galaxies. The cluster studied here - A1300 - is found to have a redshift of 0.3072 and a velocity dispersion of 1210 km/s, based on 52 cluster members. Structures are observed in the galaxy number counts but the velocity histogramme shows no significant departure from a Gaussian distribution.
keywords: galaxies: clusters: individual: Abell 1300 -- X-rays: galaxies -- galaxies: redshifts