SUMMARY OF PROPOSAL 52187
NASA GODDARD SPACE FLIGHT CENTER
CODE 662
GREENBELT
MD USA 20771
Tel: 301-286-7579 Fax: 301-286-1684
Medium: 4GBDAT
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS
MEASUREMENT OF THE MASS OF CLUSTERS OUT TO THE VIRIAL RADIUS
ABSTRACT
We propose to use ASCA to determine the mass profiles of a well-selected sample of clusters at median redshift z = 0.08. The targets are chosen to allow determination of the mass profile to as large a radius as possible, while minimizing systematic effects and maximizing the signal-to-noise level. Systematics are minimzed by selecting objects with temperatures between 3-5 keV and smooth, round X-ray isophotes. Detectability is ensured by selecting objects based on their ROSAT X-ray fluxes. The signal-to-noise level should allow us to measure the binding mass out to the virial radius and the Fe abundance out to 1 Mpc.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| UNA HWANG | NASA/GSFC | USA |
| KEITH ARNAUD | NASA/GSFC | USA |
| KURT ROETTIGER | U OF MARYLAND | USA |
| AZITA VALINIA | NASA/GSFC | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)A1775 | 2 | 205.4792 | 26.3514 | 30 ks | N | N | P | 0.94000 | 1 |
| 2)A1885 | 2 | 213.4417 | 43.6667 | 40 ks | N | N | P | 0.50000 | 1 |
| 3)A2033 | 2 | 227.8667 | 6.3511 | 40 ks | N | N | P | 0.50000 | 1 |
| 4)A1767 | 3 | 204.0000 | 59.2011 | 40 ks | N | N | P | 0.77000 | 1 |