SUMMARY OF PROPOSAL 41216
MR HAJIME EZAWA
UNIVERSITY OF TOKYO
TOKYO JAPAN 113
BUNKYO-KU
7-3-1 HONGO

  E-mail: EZAWA@PHYS.S.U-TOKYO.AC.JP	Tel: 03-3812-2111 EXT.4202	Fax: 03-3815-8875
  Medium: 4GBDAT

Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS                      
  Title: OBSERVATION OF METAL DISTRIBUTION IN X-RAY LUMINOUS NON-CD CLUSTERS OF GALAXIES A576 AND A2657


Abstract:
 We propose to observe two X-ray luminous clusters of galaxies A576 and A2657, which
 keeps no cD galaxies in their central region. The purpose of the observation is to
 study the scenario of the metal ejection from elliptical galaxies into the
 intracluster medium. The metal abundance distribution in clusters will enable us to
 determine whether ram pressure stripping or ejection by wind is the dominant process
 for ejection. Also we can determine when the stripping occured mainly in the cluster
 history by analyzing the abundance ratio between several elements such as Fe and Si.
 These observational information will cause great advance in the historical study of clusters and ICM.

 Co-Is:
   1  TAKAYA OHASHI       	TOKYO METROPOLITAN U          JAPAN     
      OHASHI@PHYS.METRO-U.AC.JP	0426-77-2492
   2  TAKAYUKI TAMURA     	UNIVERSITY OF TOKYO           JAPAN     
   3  YASUSHI FUKAZAWA    	UNIVERSITY OF TOKYO           JAPAN     
   4  KAZUO MAKISHIMA     	UNIVERSITY OF TOKYO           JAPAN     
   5  KEN'ICHI KIKUCHI    	TOKYO METROPOLITAN U          JAPAN     
   6  NORIKO YAMASAKI     	TOKYO METROPOLITAN U          JAPAN     
   7  YASUSHI IKEBE       	RIKEN                         JAPAN     


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
A576                   1  110.3504   55.7389    50   N   N   P  1.36000   1 
          
A2657                  1  356.2125    9.1443    50   N   N   P  1.08000   1