PECULIAR VELOCITIES OF CLUSTERS IN THE PERSEUS-PISCES SUPERCLUSTER

被引：85

作者：

HAN, M ^{[1
]}

MOULD, JR ^{[1
]}

机构：

[1] PALOMAR OBSERV,CALTECH 105-24,PASADENA,CA 91125

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 396卷 / 02期

关键词：

GALAXIES; CLUSTERING; DISTANCES AND REDSHIFTS; KINEMATICS AND DYNAMICS; PHOTOMETRY; RADIO LINES; ATOMIC;

D O I：

10.1086/171732

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Photometry is presented for spiral galaxies in five clusters of galaxies in the direction of the Perseus-Pisces supercluster. We employ the 21 cm observations of these galaxies by Giovanelli, Haynes, and colleagues to measure distances of these clusters by means of the Tully-Fisher relation. Most of these are in fact more distant than the supercluster and have peculiar velocities averaging -400 km s-1. This is broadly in agreement with the earlier result of Willick who analyzed a large field sample. Examination of the behavior of the whole sample of 21 clusters with Tully-Fisher distances within 10(4) km s-1 is suggestive of the bulk flow kinematic model originally fitted to elliptical galaxies in this volume by the Seven Samurai. However, a local model in which galaxies are infalling to two mass concentrations, one in Perseus-Pisces and one in Hydra-Centaurus fits the data at least as well as bulk flow. The present data leave both these possibilities open.

引用

页码：453 / 459

页数：7

共 28 条

[1] A DISTANCE SCALE FROM THE INFRARED MAGNITUDE/H-I VELOCITY-WIDTH RELATION .5. DISTANCE MODULI TO 10 GALAXY CLUSTERS, AND POSITIVE DETECTION OF BULK SUPERCLUSTER MOTION TOWARD THE MICROWAVE ANISOTROPY [J].