SUMMARY OF PROPOSAL 43041
DR. COLIN R BARBER
LEICESTER UNIVERSITY
LEICESTERSHIRE UK LE1 7RH
LEICESTER
UNIVERSITY ROAD

  E-mail: COB@STAR.LE.AC.UK	Tel: +44 1162 523510	Fax: +44 1162 523311
  Medium: 2GB8MM

Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS                      
  Title: THE EXTENDED X-RAY EMISSION CENTERED ON VV533                                   


Abstract:
 We propose an ASCA observation of an extended X-ray source discovered
 serendipitously in the ROSAT UK medium sensitivity survey. The extended emission
 coincides with a grouping of bright galaxies apparent on the POSS plates. Limited
 spectral information has been extracted from the ROSAT PSPC data. The ROSAT HRI and
 optical data (both of which are currently being analysed) will allow us to untangle
 the diffuse and discrete emission components in addition to determining the space
 distribution of the emitting sources. The ASCA observation is a necessary compliment
 to the existing dataset as it will represent a vast improvement to the available
 spectral data and elucidate the 0.5-8 keV behaviour of this enigmatic patch of emission.

 Co-Is:
   1  ROBERT WARWICK      	LEICESTER UNIVERSITY          UK        
      RSW@STAR.LE.AC.UK	+44 1162 523517


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
VV533                  3  152.5892   54.4431    50   Y   N   P  0.15000   1 

REMARKS:  FOR 3/10-31/10 "95 AND 29/3-27/4 "96 USE CCDS PARALLEL TO SPACECRAFT Y
          AXIS. FOR 20/11-3/12 "95 AND 18/5-31/5 "96 USE CCDS PERPENDICULAR TO
          SPACECRAFT Y AXIS. POSITION IS FOR CENTROID OF CCD PAIR.