Type II quasars in the most luminous galaxies

被引：0
|
作者：
Iwasawa, K [1 ]
机构：
[1] Inst Astron, Cambridge CB3 0HA, England
来源：
Proceedings of the X-ray Universe 2005, Vols 1 and 2 | 2006年 / 604卷
关键词：
LATEX; ESA; X-rays;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
An X-ray investigation of Type II active nuclei hosted in the hyperluminous infrared galaxies (HLIGs) is presented. Two classical HLIGs discovered in the IRAS survey, IRAS 09104+4109 and IRAS F15307+3252, are found to share many properties: 1) The active nuclei are absorbed by Compton-thick obscuring matter, and powered by well-grown (billions solar mass) black holes; 2) The large infrared luminosity appears to be due to hot/warm dust heated by the hidden active nuclei; 3) Both galaxies resides in a rich environment and are very luminous. In comparison, the HLIGs might be fundamemntally different from the local lower luminosity counterparts, ultra-luminous infrared galaxies (ULIGs) in their formation. The rich environment suggests that it could be a necessary condition to form the most luminous quasars, and their relation to high redshift radio galaxies is discussed briefly.
引用
收藏
页码：515 / 519
页数：5
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