SUMMARY OF PROPOSAL 41244
DR SHINJI SATO
NAGOYA UNIVERSITY
AICHI JAPAN 464-01
NAGOYA
CHIKUSAKU

  E-mail: SATO@TOYO.PHYS.NAGOYA-U.AC.JP	Tel: 81-52-789-2453	Fax: 81-52-789-2919
  Medium: 4GBDAT

Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS                      
  Title: RICH CLUSTER A779 WHICH HAVE A BRIGHT CD GALAXY WITH VERY FAINT CD ENVELOPE.    


Abstract:
 Recent observations show the stars in cD envelope consist of considerably old
 population as host galaxy. If cD envelope is formed by stripping , interactions have
 to take place at begining phase of cluster evolution. Scombert(1988) suggested that
 luminosity of cD envelope have good corelation with X ray luminosty of its cluster .
 This result directly indicate a connection between cluster potential and
 developement of cD galaxy. The terget of this observation A779 have bright cD galaxy
 (Mv=-23.2), but have very faint cD envelope, which luminosity is 2 order of
 magnitude fainter than average X ray luminous clusters. This observation will show
 us effects of cluster potential to cD envelope. And reveal evolutional history of cD galaxy.

 Co-Is:
   1  YUZURU TAWARA       	NAGOYA UNIVERSITY             JAPAN     
      (No Co-I contact data)
   2  AKIKO KUMADA        	NAGOYA UNIVERSITY             JAPAN     
   3  AKIHIRO FURUZAWA    	NAGOYA UNIVERSITY             JAPAN     


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
A779                   3  139.9625   33.7881    40   N   Y   P  0.08700   1