SUMMARY OF PROPOSAL 52178
UNIVERSITY OF HAWAII
2680 WOODLAWN DRIVE
HONOLULU
HI USA 96822
Tel: +1 808 956 9695 Fax: +1 808 956 9590
Medium: 5GB8MM
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS
A COMPARATIVE STUDY OF X-RAY AND LENSING MASS DETERMINATIONS FOR THE MOST X-RAY LUMINOUS CLUSTERS IN THE SKY
ABSTRACT
We propose ASCA observations of three clusters of galaxies found to be among the most X-ray luminous clusters in the sky in the ROSAT All-Sky Survey. These systems form part of a statistical sample of massive clusters selected from the XBACs and BCS cluster samples for an in-depth study of the mass distribution in clusters by combining X-ray mass determinations with those from observations of strong gravitational lensing. All targets proposed here for observation show giant gravitational arcs in deep CCD images obtained from Mauna Kea. Our combined X-ray/lensing approach will provide the most accurate and reliable measurement of cluster masses to date and will allow a first determination of the cluster mass function.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| STEVE ALLEN | IOA, CAMBRIDGE | UK |
| ANDY FABIAN | IOA, CAMBRIDGE | UK |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)A2537 | 1 | 347.0917 | -2.1917 | 40 ks | N | N | P | 0.23000 | 1 |
| 2)A267 | 2 | 28.1750 | 1.0250 | 40 ks | N | N | P | 0.23000 | 1 |
| 3)RXJ1720.1+2638 | 3 | 260.0417 | 26.6250 | 20 ks | N | N | P | 0.61000 | 1 |