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A&A Supplement Ser., Vol. 124, August 1997, 283-289

Received July 22; accepted November 6, 1996

Spectroscopic and photometric study of the bright X-ray cluster A1300

M. Pierretex2html_wrap1010 - J. Oukbirtex2html_wrap1012 - D. Dubreuiltex2html_wrap1014 - G. Soucailtex2html_wrap1016 - J.-L. Sauvageottex2html_wrap1018 - Y. Melliertex2html_wrap1020

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tex2html_wrap1022  CEA Saclay DSM/DAPNIA, Service d'Astrophysique, F-91191 Gif sur Yvette, France
tex2html_wrap1024  Observatoire Midi-Pyrénées, Laboratoire d'Astrophysique de Toulouse, UMR 5572, 14 Avenue E. Belin, F-31400 Toulouse, France
tex2html_wrap1026  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 tex2html_wrap_inline994: 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 distributiongif.

keywords: galaxies: clusters: individual: Abell 1300 -- X-rays: galaxies -- galaxies: redshifts

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