OPTICAL SPECTROSCOPY OF THE ROSAT X-RAY BRIGHTEST CLUSTERS .2.

被引：81

作者：

CRAWFORD, CS ^{[1
]}

EDGE, AC ^{[1
]}

FABIAN, AC ^{[1
]}

ALLEN, SW ^{[1
]}

BOHRINGER, H ^{[1
]}

EBELING, H ^{[1
]}

MCMAHON, RG ^{[1
]}

VOGES, W ^{[1
]}

机构：

[1] MAX PLANCK INST EXTRATERR PHYS,D-85740 GARCHING,GERMANY

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1995年 / 274卷 / 01期

关键词：

SURVEYS; GALAXIES; CLUSTERS; GENERAL; COOLING FLOWS; ELLIPTIC AND LENTICULAR; CD; STELLAR CONTENT; X-RAYS;

D O I：

10.1093/mnras/274.1.75

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report results from the second stage of an optical follow-up study aimed at determining new redshifts for clusters of galaxies selected from the ROSAT All-Sky Survey. We review the optical properties of all the clusters obtained so far in this programme, which comprises 71 clusters up to a redshift of 0.3. The fraction of central galaxies exhibiting optical line emission and an excess blue continum is 34 per cent, consistent with smaller, previous, X-ray samples. There is no trend for this fraction to increase with redshift, although we find a clear tendency for the strongest line emitters to have the bluest continua. The probability of the presence of line emission and an excess blue continuum is increased for those galaxies with associated radio sources, although the strength of these features does not appear to be related to the power of the radio emission.

引用

页码：75 / 84

页数：10