SUMMARY OF PROPOSAL 61203

DR SHINJI SATO
SATO@TOYO.PHYS.NAGOYA-U.AC.JP

NAGOYA UNIVERSITY
AICHI JAPAN 464-01
NAGOYA
CHIKUSA-KU FUROU-CHYO
Tel: 81-52-789-2453 Fax: 81-52-789-2929
Medium: 2.5GB8MM
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS

OBSERVATION OF X-RAY DARK CD CLUSTER A2162


ABSTRACT

A2162 has exceptionally small X-ray luminosity comparing with its large cD envelope. We suggest this object is in a transition phase from isolated cD galaxy to cluster of galaxies. If the gravitational potential of cluster is getting virialized at the present, the gas temperature and the dark matter density should be significantly smaller than average rich clusters. This object give us an excellent opportunity to test hierarchical clustering theory.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY
YUZURU TAWARANAGOYA UNIVERSITYJAPAN
YASUKI KUMAIKUMAMOTO GAKUENJAPAN
AKIHIRO FURUZAWANAGOYA UNIVERSITYJAPAN
FUMIE AKIMOTONAGOYA UNIVERSITYJAPAN
MANABU WATANABENAGOYA UNIVERSITYJAPAN

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
1)A2162
3
242.6483 29.6114 40 ksN
Y
P
0.04000
1