SUMMARY OF PROPOSAL 42175
DR. JOHN S. MULCHAEY
OBSERVATORIES OF THE CARNEGIE INSTITUTION OF WASHINGTON
CA USA 91101
PASADENA
813 SANTA BARBARA ST.

  E-mail: MULCHAEY@PEGASUS.OCIW.EDU	Tel: (818)-304-0257	Fax: (818)-795-8136
  Medium: 4GBDAT

Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS                      
  Title: ASCA OBSERVATIONS OF THE INTRA-GROUP MEDIUM IN POOR GROUPS OF GALAXIES          


Abstract:
 We propose to obtain ASCA observations of three groups of galaxies known to contain
 a diffuse intra-group medium based on ROSAT PSPC observations. These observations
 will allow us to address the following questions: 1) What is the typical temperature
 and metalicity of the intra-group medium in poor groups? 2) What is the origin of
 the intra-group medium? 3) What are the total masses of poor groups? 4) What are the
 baryonic fractions in poor groups?. We have selected three groups, which while X-ray
 bright, are distant enough that they can effectively be studied with the SIS in
 2-CCD mode. Given the impending end to 2-CCD mode, this A0 offers the last chance to
 obtain good temperature and abundance measurements for poor groups.

 Co-Is:
   1  DAVID DAVIS         	U. OF ALABAMA                 USA       
      DAVIS@HERA.ASTR.UA.EDU	(205)-348-4593
   2  RICHARD MUSHOTZKY   	NASA/GSFC                     USA       
   3  DAVID BURSTEIN      	ARIZONA STATE U.              USA       


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
          
NGC 6329 GROUP         0  258.5621   43.6842    40   N   Y   P  0.10000   1 
          
NGC 5129 GROUP         0  201.0404   13.9761    40   N   Y   P  0.08000   1