X-RAY AND INFRARED SELECTED AGN .2. OPTICAL SPECTROSCOPY

被引：49

作者：

KIRHAKOS, SD ^{[1
]}

STEINER, JE ^{[1
]}

机构：

[1] NATL OPT ASTRON OBSERV,CERRO TOLOLO INTER AMER OBSERV,LA SERENA,CHILE

来源：

ASTRONOMICAL JOURNAL | 1990年 / 99卷 / 06期

关键词：

D O I：

10.1086/115453

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a search for obscured active galactic nuclei we selected 144 x-ray/infrared emitting galaxies. Optical spectroscopy of this sample is presented. A classification according to the nuclear activity shows that 28 are AGN, 39 are transition-type objects and 44 are H II region-like galaxies. Three of the 28 AGN are Seyfert 1 galaxies and the others are of Type 2. We suggest that the objects identified as narrow line AGN are obscured Seyfert 1. Most of the observed galaxies are seen edge-on, indicating that dust may have a flattened distribution coplanar to the disk of the parent galaxy. With the inclusion of the newly identified AGN, the sample of the x-ray emitting Seyfert 2 galaxies is fairly complete above a flux limit of log FHx ∼ -10.8.

引用

页码：1722 / 1739

页数：18

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