A MEASUREMENT OF THE SUNYAEV-ZELDOVICH EFFECT IN THE COMA CLUSTER OF GALAXIES

被引：92

作者：

HERBIG, T ^{[1
]}

LAWRENCE, CR ^{[1
]}

READHEAD, ACS ^{[1
]}

GULKIS, S ^{[1
]}

机构：

[1] CALTECH,JET PROP LAB,PASADENA,CA 91125

来源：

ASTROPHYSICAL JOURNAL | 1995年 / 449卷 / 01期

关键词：

COSMIC MICROWAVE BACKGROUND; DISTANCE SCALE; GALAXIES; CLUSTERS; INDIVIDUAL; (COMA);

D O I：

10.1086/309616

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection of the Sunyaev-Zel'dovich effect in the Coma cluster of galaxies with the 5.5 m telescope at the Owens Valley Radio Observatory. The measured decrement of the temperature of the cosmic microwave background is Delta T-0,T-obs,obs -270 +/- 29 mu K After correcting for the effect of discrete radio sources and applying current models for the X-ray atmosphere of the cluster, we calculate the peak of the effect to be Delta T-0(0) = -505 +/- 92 mu K. Using the same X-ray models, and assuming spherical symmetry for the gas atmosphere, we derive a Hubble constant of H-0= 71(-25)(+30) km s(-1) Mpc(-1). This is the first detection of the Sunyaev-Zel'dovich effect in a nearby cluster of galaxies.

引用

页码：L5 / L8

页数：4

共 24 条

[1] A CATALOG OF RICH CLUSTERS OF GALAXIES [J].