SUMMARY OF PROPOSAL 72181

PROFESSOR JOSEPH PATRICK HENRY
HENRY@IFA.HAWAII.EDU

UNIVERSITY OF HAWAII
2680 WOODLAWN DRIVE
HONOLULU
HI USA 96822
Tel: 808-956-7598 Fax: 808-956-9590
Medium: CD ROM
Subject: CLUSTERS OF GALAXIES AND SUPERCLUSTERS

THE LAST FIVE HIGH REDSHIFT EMSS CLUSTERS


ABSTRACT

There are 23 Einstein Medium Sensitivity Survey clusters with z > 0.3. All but 4 have ROSAT HRI images and all but 6 have ASCA spectra. Of these 6, 1 is near NGC4151 whose scattered light precludes observations with ASCA. We propose to obtain the spectra of the last 5 feasible clusters. Our particular interest is to determine cluster temperature evolution in order to constrain cosmological parameters. However, there are many other uses for a complete sample of clusters with temperatures all measured with the same instrument.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
2)MS1532.5+0130
A
233.7542 1.3467
65 ks
N
N
P
0.01100
1
3)MS0418.3-3844
A
65.0250-38.6342
65 ks
N
N
P
0.00800
1
4)MS0147.8-3941
A
27.5042-39.4528
65 ks
N
N
P
0.00780
1
5)MS0821.5+0337
A
126.0417 3.4622
65 ks
N
N
P
0.00760
1

TARGET 2

F_TOT(0.3,3.5) = 3.75E-13, Z = 0.320

TARGET 3

F_TOT(0.3,3.5) = 2.74E-13, Z = 0.350

TARGET 4

F_TOT(0.3,3.5) = 2.66E-13, Z = 0.373

TARGET 5

F_TOT(0.3,3.5) = 2.58E-13, Z = 0.347