SUMMARY OF PROPOSAL 52194
OBSERVATORIES OF THE CARNEGIE INSTITUTION OF WASHINGTON
813 SANTA BARBARA ST.
PASADENA
CA USA 91101
Tel: (818)-304-0257 Fax: (818)-795-8136
Medium: 2GB8MM
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS
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.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| DAVID DAVIS | U. OF ALABAMA | USA |
| RICHARD MUSHOTZKY | NASA/GSFC | USA |
| DAVID BURSTEIN | ARIZONA STATE U. | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)NGC 4325 GROUP | 1 | 185.7779 | 10.6211 | 30 ks | N | Y | P | 0.16000 | 1 |
| 3)NGC 6269 GROUP | 3 | 254.4921 | 27.8543 | 40 ks | N | Y | P | 0.07000 | 1 |