The X-ray evolution of clusters of galaxies

被引：2

作者：

Jones, LR ^{[1
]}

Scharf, C

Perlman, E

Ebeling, H

Horner, D

Wegner, G

Malkan, M

McHardy, I

机构：

[1] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[2] STScI, Baltimore, MD USA

[3] Univ Hawaii, Honolulu, HI 96822 USA

[4] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[5] Dartmouth Coll, Hanover, NH USA

[6] Univ Calif Los Angeles, Los Angeles, CA USA

[7] Univ Southampton, Southampton, Hants, England

来源：

ASTRONOMISCHE NACHRICHTEN | 1998年 / 319卷 / 1-2期

关键词：

X-rays; clusters of galaxies;

D O I：

10.1002/asna.2123190141

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The WARPS survey currently contains 48 X-ray selected clusters and groups of galaxies, detected serendipitously in ROSAT PSPC archival pointed observations. The survey includes the highest redshift X-ray selected cluster known (z=0.8325). The redshift range is large enough for evolutionary effects to be studied within the sample. Here we describe the X-ray luminosity function and Log(N)-Log(S) results for the initial complete sample of 29 spectroscopically confirmed clusters. We find that the X-ray luminosity function does not evolve at z-0.5 for cluster luminosities of similar to 10(44) erg s(-1), but that there is a hint of positive evolution at lower luminosities from the number of groups & clusters found in the faintest available X-ray cluster sample (the UK deep survey).

引用

页码：87 / 90

页数：4

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