SUMMARY OF PROPOSAL 62161
UNIVERSITY OF VIRGINIA
P.O. BOX 3818
CHARLOTTESVILLE
VIRGINIA USA 22903-0818
Tel: 804-924-4903 Fax: 804-924-3104
Medium: CD ROM
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS
COOLING GAS, COLD GAS, AND THE DYNAMICAL HISTORY OF CLUSTERS OF GALAXIES
ABSTRACT
We propose spectra for five X-ray clusters with cooling flows. All have optical emission lines and blue stars. We will derive the amount of cooling material, and the density structure of inhomogeneities. By comparison to the optical observations, we will constrain the physical state and ultimate repository of the cooling gas. We will measure or limit the excess X-ray absorption towards the cooling flows. Previous observations suggest that cooling flows occur in clusters which have not undergone a recent merger. We will determine the global temperature, the temperature profile, and a crude temperature map, and compare to ROSAT images to look for merger signatures. If they are relaxed clusters, we will use hydrostatic equilibrium to determine the amount and distribution of dark matter.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| MICHAEL WISE | MIT | USA |
| MAXIM MARKEVICH | HARVARD-SMITHSONIAN | USA |
| ZHENPING HUANG | UNIV. VIRGINIA | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)A2244 | 2 | 255.6712 | 34.0617 | 40 ks | N | Y | P | 0.79440 | 1 |
| 2)A1991 | 3 | 223.6312 | 18.6453 | 60 ks | N | Y | P | 0.37190 | 1 |