首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Abell 1367 and 1060 observed with EXOSAT
Authors:H U Nørgaard-Nielsen  N J Westergaard  L Hansen
Institution:(1) Copenhagen University Observatory, Østervoldgade 3, DK-1350 Copenhagen K, Denmark;(2) Danish Space Research Institute, Lundtoftevei 7, DK-2800 Lyngby, Denmark
Abstract:Summary Two clusters of galaxies have been observed with EXOSAT to map the distribution of cool gas. For A1367 we have detected the two brightest sources found by EINSTEIN. We confirm the identification of a X-ray source with a blue object near NGC3842. By comparing the EXOSAT and the EINSTEIN count rates we can state, either that the source is variable, or that the HI column density is low and the spectrum is either a power-law with a spectral index > 1.5 or thermal with a temperature below 6×106 K. For A1060 we confirm the classification from optical data of NGC3311 as the dominant galaxy but we find no evidence for a central source as inferred from the EINSTEIN data. We derive an accretion rate of sim10Mo/yr.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号