SUMMARY OF PROPOSAL 82131
SPACE TELESCOPE SCIENCE INSTITUTE
3700 SAN MARTIN DRIVE
BALTIMORE
MD USA 21218
Tel: 410 338 4701 Fax: 410 338 4767
Medium: CD ROM
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS
AN UNUSUAL CLUSTER OF GALAXIES AT Z
ABSTRACT
We propose to observe the X-ray luminous cluster of galaxies RXJ0152.7-1357 (z=0.833) in order to measure up to two temperature and iron abundance components. Our experiment has three main goals: (1) To determine whether this cluster, missed by the EMSS, is hotter than 8 keV. If so, the EMSS is incomplete at this temperature and overestimates Omega_M. (2) To obtain two additional Lx-Tx measurements to compare to the local cluster Lx-Tx relation and constrain its evolution. (3) To measure the iron abundance of a z=0.8 cluster, to test whether an irregular system at z=0.8 has significant amounts of intracluster iron. This observation provides us with a first glimpse of a z=0.8 cluster environment which may NOT be a virialized system dominated by a single mass concentration.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| CALEB SCHARF | STSCI | USA |
| AARON LEWIS | UNIV. COLORADO | USA |
| JOHN STOCKE | UNIV. COLORADO | USA |
| MARK VOIT | STSCI | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)RXJ0152.7-1357 | B | 28.1792 | -13.9583 | 320 ks | N | N | P | 0.01700 | 1 |