CEA Saclay DSM/DAPNIA, Service d'Astrophysique, F-91191 Gif sur Yvette, France
2 Observatoire Midi-Pyrénées, Laboratoire d'Astrophysique de Toulouse, UMR 5572, 14 Avenue E. Belin, F-31400 Toulouse, France
3 Institut d'Astrophysique, 98bis Bd. Arago, F-75014 Paris, France
Send offprint request to: M. Pierre
Accepted: 6 November 1996
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.
Key words: galaxies: clusters: individual: Abell 1300 / X-rays: galaxies / galaxies: redshifts
Based on observations collected at the Canada-France-Hawaii Telescope at Mauna Kea, Hawaii, U.S.A.
Table 3 (4) is only (also) available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (188.8.131.52) or via http://cdsweb.u-strasbg.fr/Abstract.html
© European Southern Observatory (ESO), 1997