X-Ray Selected Type 2 QSOs and Their Host Galaxies

被引：0
|
作者：
Mainieri, Vincenzo [1 ]
机构：
[1] ESO, D-85748 Garching, Germany
来源：
CO-EVOLUTION OF CENTRAL BLACK HOLES AND GALAXIES | 2010年 / 267期
关键词：
galaxies: active; quasars: general; X-rays: general; ACTIVE GALACTIC NUCLEI; DEEP FIELD-SOUTH; STAR-FORMATION; REDSHIFT; UNIVERSE; EVOLUTION; SAMPLE; IV;
D O I：
10.1017/S1743921310005600
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a large sample of X-ray selected type 2 QSOs from the XMM-COSMOS survey. Type 2 QSOs are luminous AGN whose central engines are obscured by large amounts of gas and dust. The selection criteria we have used are based on high X-ray luminosity (L-X > 10(44) erg s(-1)) and heavy obscuration (N-H > 10(22) cm(-2)). We derived stellar masses and star-formation rate estimates for the host galaxies from the best fit of the observed photometry. Type 2 QSOs are generally hosted in massive galaxies with on-going star formation.
引用
收藏
页码：80 / 84
页数：5
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