SUMMARY OF PROPOSAL 61197
RIKEN
SAITAMA JAPAN 351-01
WAKO
2-1 HIROSAWA
Tel: 048-462-1111 Fax: 048-462-4640
Medium: 4GBDAT
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS
HIGH-Z LARGE CLUSTER OF GALAXIES AROUND 3CR184
ABSTRACT
The result of Hattori's cluster, AX J2019+1127, indicates a large metal abundance in high-z clusters (z~1). This proposal is to verify the indication. The cluster of galaxies around a radio galaxy 3CR184 (z=0.996) was found with HST and ground-based telescopes. There were excesses in galaxy density in both projection and redshift directions. Also, a gravitational arc with HST lead to a virial mass of 6E14 h50^-1 solar masses, which is double of Hattori's cluster or Coma cluster. This is a large rich cluster with a similar mass and redshift as Hattori's dark cluster, and, therefore, is a good target to find out a red-shifted strong iron line.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| MAKOTO HATTORI | TOHOKU-U | JAPAN |
| KAZUHISA MITSUDA | ISAS | JAPAN |
| NAOMI OTA | ISAS | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)3CR184 CLUSTER | 1 | 114.8521 | 70.3864 | 80 ks | N | Y | P | 0.00400 | 1 |