SUMMARY OF PROPOSAL 41250 DR. KOUJUN YAMASHITA NAGOYA UNIVERSITY AICHI-KEN JAPAN 464-01 NAGOYA FURO-CHO, CHIKUSA-KU E-mail: YAMASITA@SATIO.PHYS.NAGOYA-U.AC.JP Tel: 81-52-789-3540 Fax: 81-52-789-2919 Medium: 4GBDAT Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS Title: TEMPERATURE AND ABUNDANCE DISTRIBUTION OF RICH CLUSTERS SELECTED FROM ESO KEY PROGRAMME OBSERVATIONS Abstract: It is important to investigate the formation and evolution of clusters by means of optical and X-ray observations. There are no good correlations between optical and X-ray parameters. The detailed optical observations ob Abell clusters $(z<0.1)$ in southern sky are carried out by ESO key programme. We have selected two rich clusters out of 107 A3158(z=0.0592) and A3128(z=0.0600). We make clear the correlation among the distribution of galaxies. ICM and dark matter in these clusters by combining ASCA data and ESO optical data. This gives a clue to investigate the \beta -problem, origin of ISM and cluster merging. Co-Is: 1 YUZURU TAWARA NAGOYA UNIV. JAPAN (No Co-I contact data) 2 AKIHIRO FURUZAWA NAGOYA UNIV. JAPAN 3 FUMIE AKIMOTO NAGOYA UNIV. JAPAN 4 MANABU WATANABE NAGOYA UNIV. JAPAN 5 AKIKO KUMADA NAGOYA UNIV. JAPAN 6 SHIGERU MIYOSHI KYOTO SANGYO UNIV. JAPAN 7 A. MAZURE CNRS, LAS FRANCE Target Name PRI RA Dec Time TC Off GIS SIS_Cts Obs ------------------- --- -------- -------- ---- -- --- --- ------- --- A3158 3 55.7500 -53.6333 40 N N P 0.80000 1