SUMMARY OF PROPOSAL 41186
DR KAZUSHI IWASAWA
NAGOYA UNIVERSITY
AICHI JAPAN 464-01
NAGOYA
CHIKUSA-KU

  E-mail: IWASAWA@SATIO.PHYS.NAGOYA-U.AC.JP	Tel: 052-789-2918	Fax: 052-789-2919
  Medium: 4GBDAT

Subject: AGN                                                         
  Title: ASCA OBSERVATIONS OF THE DISTANT X-RAY LUMINOUS GALAXY CLUSTER AROUND 3C254     


Abstract:
 Optical and ROSAT observations clearly show that the radio-luminous quasar 3C254 is
 embedded in a dense intracluster medium (ICM). Such an ICM would possess a cluster
 cooling flow with a mass deposition rate of 1000 solar masses per year. As such,
 this system may be similar to IRASP09104+4109 but at a higher redshift. We propose
 ASCA observations in order to detect and measure the associated cluster iron line
 and thus determine the metallicity. This would be the most distant cluster for which
 the metallicity has been measured and would produce strong constraints on cluster evolution models.

 Co-Is:
   1  CAROLIN CRAWFORD    	IOA, CAMBRIDGE                UK        
      CSC@AST.CAM.AC.UK	(44) 1223 337548
   2  ANDREW FABIAN       	IOA, CAMBRIDGE                UK        
   3  CHRISTOPHER REYNOLDS	IOA, CAMBRIDGE                UK        


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
3C 254                 3  168.7208   40.6222    40   N   Y   P  0.01600   1