SUMMARY OF PROPOSAL 52177
SPACE TELESCOPE SCIENCE INSTITUTE
3700 SAN MARTIN DRIVE
BALTIMORE
MD USA 21218
Tel: 410 338 4701 Fax: 410 338 4717
Medium: 2GB8MM
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS
AN X-RAY LUMINOUS, DISTANT (Z
ABSTRACT
We are proposing to complete our program to measure the X-ray temperatures (Tx) of X-ray luminous, distant (z>0.5) clusters of galaxies. The final cluster in our sample, MS1137+66 (z=0.78), is just as luminous but optically much poorer than the other 3 clusters. The distant clusters observed thus far in our sample are hotter than standard structure formation models predict. Cluster temperatures at high redshift constrain predictions of Lx-Tx evolution. Because MS1137+66 is chosen from a well-defined X-ray selected sample, its Tx also constrains the z=0.8 cluster temperature function. It is bright and compact enough for 1-CCD SIS observations; the temperature break is redshifted to ~3-5 keV. HST WFPC2 and ROSAT HRI images are scheduled for MS1137+66.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| JOHN STOCKE | UNIV. OF COLORADO | USA |
| ISABELLA GIOIA | IFA, HAWAII | USA |
| GERRY LUPPINO | IFA, HAWAII | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)MS1137.5+6625 | 1 | 175.0992 | 66.1386 | 80 ks | N | N | P | 0.01600 | 1 |