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

页码：80 / 84

页数：5

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